Home / 201,414,722,087.89-278,077,779,561.11-128,212,271,435.92

Finding the Fourth Proportional to 201,414,722,087.89, 278,077,779,561.11 and 128,212,271,435.92

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Solution

The fourth proportional to 201,414,722,087.89, 278,077,779,561.11 and 128,212,271,435.92 is: 177,012,799,182.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,414,722,087.89 : 278,077,779,561.11 = 128,212,271,435.92 : x
  2. Step 2: Convert to fraction form
    201,414,722,087.89/278,077,779,561.11 = 128,212,271,435.92/x
  3. Step 3: Cross multiply
    201,414,722,087.89x = 278,077,779,561.11 × 128,212,271,435.92
  4. Step 4: Simplify right side
    201,414,722,087.89x = 35,652,983,753,386,961,666,048
  5. Step 5: Solve for x
    x = 35,652,983,753,386,961,666,048/201,414,722,087.89
  6. Step 6: Final answer
    x = 177,012,799,182.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.