Home / 287,862,608.76-431,795,167.94-91,126,984.65

Finding the Fourth Proportional to 287,862,608.76, 431,795,167.94 and 91,126,984.65

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Solution

The fourth proportional to 287,862,608.76, 431,795,167.94 and 91,126,984.65 is: 136,690,874.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,862,608.76 : 431,795,167.94 = 91,126,984.65 : x
  2. Step 2: Convert to fraction form
    287,862,608.76/431,795,167.94 = 91,126,984.65/x
  3. Step 3: Cross multiply
    287,862,608.76x = 431,795,167.94 × 91,126,984.65
  4. Step 4: Simplify right side
    287,862,608.76x = 39,348,191,640,356,920
  5. Step 5: Solve for x
    x = 39,348,191,640,356,920/287,862,608.76
  6. Step 6: Final answer
    x = 136,690,874.20

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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.