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Finding the Fourth Proportional to 102,391,687.60, 153,587,531.40 and 67,954,310.80

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Solution

The fourth proportional to 102,391,687.60, 153,587,531.40 and 67,954,310.80 is: 101,931,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,391,687.60 : 153,587,531.40 = 67,954,310.80 : x
  2. Step 2: Convert to fraction form
    102,391,687.60/153,587,531.40 = 67,954,310.80/x
  3. Step 3: Cross multiply
    102,391,687.60x = 153,587,531.40 × 67,954,310.80
  4. Step 4: Simplify right side
    102,391,687.60x = 10,436,934,843,760,360
  5. Step 5: Solve for x
    x = 10,436,934,843,760,360/102,391,687.60
  6. Step 6: Final answer
    x = 101,931,466.20

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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.