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Finding the Fourth Proportional to 131,248.98, 180,957.11 and 100,657.71

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Solution

The fourth proportional to 131,248.98, 180,957.11 and 100,657.71 is: 138,779.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,248.98 : 180,957.11 = 100,657.71 : x
  2. Step 2: Convert to fraction form
    131,248.98/180,957.11 = 100,657.71/x
  3. Step 3: Cross multiply
    131,248.98x = 180,957.11 × 100,657.71
  4. Step 4: Simplify right side
    131,248.98x = 18,214,727,797.53
  5. Step 5: Solve for x
    x = 18,214,727,797.53/131,248.98
  6. Step 6: Final answer
    x = 138,779.96

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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.