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Finding the Fourth Proportional to 118,347.10, 177,520.65 and 71,691.10

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Solution

The fourth proportional to 118,347.10, 177,520.65 and 71,691.10 is: 107,536.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,347.10 : 177,520.65 = 71,691.10 : x
  2. Step 2: Convert to fraction form
    118,347.10/177,520.65 = 71,691.10/x
  3. Step 3: Cross multiply
    118,347.10x = 177,520.65 × 71,691.10
  4. Step 4: Simplify right side
    118,347.10x = 12,726,650,671.22
  5. Step 5: Solve for x
    x = 12,726,650,671.22/118,347.10
  6. Step 6: Final answer
    x = 107,536.65

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1.5x scale

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.