Home / 128,200,568.12-176,977,783.46-85,886,986.52

Finding the Fourth Proportional to 128,200,568.12, 176,977,783.46 and 85,886,986.52

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Solution

The fourth proportional to 128,200,568.12, 176,977,783.46 and 85,886,986.52 is: 118,564,907.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,200,568.12 : 176,977,783.46 = 85,886,986.52 : x
  2. Step 2: Convert to fraction form
    128,200,568.12/176,977,783.46 = 85,886,986.52/x
  3. Step 3: Cross multiply
    128,200,568.12x = 176,977,783.46 × 85,886,986.52
  4. Step 4: Simplify right side
    128,200,568.12x = 15,200,088,502,368,498
  5. Step 5: Solve for x
    x = 15,200,088,502,368,498/128,200,568.12
  6. Step 6: Final answer
    x = 118,564,907.51

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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.