Home / 91,584,046.20-137,376,069.30-85,915,342.20

Finding the Fourth Proportional to 91,584,046.20, 137,376,069.30 and 85,915,342.20

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Solution

The fourth proportional to 91,584,046.20, 137,376,069.30 and 85,915,342.20 is: 128,873,013.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,584,046.20 : 137,376,069.30 = 85,915,342.20 : x
  2. Step 2: Convert to fraction form
    91,584,046.20/137,376,069.30 = 85,915,342.20/x
  3. Step 3: Cross multiply
    91,584,046.20x = 137,376,069.30 × 85,915,342.20
  4. Step 4: Simplify right side
    91,584,046.20x = 11,802,712,004,000,416
  5. Step 5: Solve for x
    x = 11,802,712,004,000,416/91,584,046.20
  6. Step 6: Final answer
    x = 128,873,013.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.