Home / 113,818.26-156,972.80-68,487.78

Finding the Fourth Proportional to 113,818.26, 156,972.80 and 68,487.78

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Solution

The fourth proportional to 113,818.26, 156,972.80 and 68,487.78 is: 94,455.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,818.26 : 156,972.80 = 68,487.78 : x
  2. Step 2: Convert to fraction form
    113,818.26/156,972.80 = 68,487.78/x
  3. Step 3: Cross multiply
    113,818.26x = 156,972.80 × 68,487.78
  4. Step 4: Simplify right side
    113,818.26x = 10,750,718,592.38
  5. Step 5: Solve for x
    x = 10,750,718,592.38/113,818.26
  6. Step 6: Final answer
    x = 94,455.13

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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.