Home / 201,414,722,090.33-278,077,779,564.47-128,212,271,438.35

Finding the Fourth Proportional to 201,414,722,090.33, 278,077,779,564.47 and 128,212,271,438.35

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Solution

The fourth proportional to 201,414,722,090.33, 278,077,779,564.47 and 128,212,271,438.35 is: 177,012,799,186.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,414,722,090.33 : 278,077,779,564.47 = 128,212,271,438.35 : x
  2. Step 2: Convert to fraction form
    201,414,722,090.33/278,077,779,564.47 = 128,212,271,438.35/x
  3. Step 3: Cross multiply
    201,414,722,090.33x = 278,077,779,564.47 × 128,212,271,438.35
  4. Step 4: Simplify right side
    201,414,722,090.33x = 35,652,983,754,493,481,975,808
  5. Step 5: Solve for x
    x = 35,652,983,754,493,481,975,808/201,414,722,090.33
  6. Step 6: Final answer
    x = 177,012,799,186.07

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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.