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Finding the Fourth Proportional to 157,046.76, 216,687.88 and 91,625.39

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Solution

The fourth proportional to 157,046.76, 216,687.88 and 91,625.39 is: 126,421.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,046.76 : 216,687.88 = 91,625.39 : x
  2. Step 2: Convert to fraction form
    157,046.76/216,687.88 = 91,625.39/x
  3. Step 3: Cross multiply
    157,046.76x = 216,687.88 × 91,625.39
  4. Step 4: Simplify right side
    157,046.76x = 19,854,110,200.77
  5. Step 5: Solve for x
    x = 19,854,110,200.77/157,046.76
  6. Step 6: Final answer
    x = 126,421.65

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1.5x scale

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.