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Finding the Fourth Proportional to 113,418, 156,516.84 and 63,117.04

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Solution

The fourth proportional to 113,418, 156,516.84 and 63,117.04 is: 87,101.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,418 : 156,516.84 = 63,117.04 : x
  2. Step 2: Convert to fraction form
    113,418/156,516.84 = 63,117.04/x
  3. Step 3: Cross multiply
    113,418x = 156,516.84 × 63,117.04
  4. Step 4: Simplify right side
    113,418x = 9,878,879,650.95
  5. Step 5: Solve for x
    x = 9,878,879,650.95/113,418
  6. Step 6: Final answer
    x = 87,101.52

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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.