Home / 132,397.92-182,688.80-78,663.12

Finding the Fourth Proportional to 132,397.92, 182,688.80 and 78,663.12

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Solution

The fourth proportional to 132,397.92, 182,688.80 and 78,663.12 is: 108,543.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,397.92 : 182,688.80 = 78,663.12 : x
  2. Step 2: Convert to fraction form
    132,397.92/182,688.80 = 78,663.12/x
  3. Step 3: Cross multiply
    132,397.92x = 182,688.80 × 78,663.12
  4. Step 4: Simplify right side
    132,397.92x = 14,370,870,997.06
  5. Step 5: Solve for x
    x = 14,370,870,997.06/132,397.92
  6. Step 6: Final answer
    x = 108,543.03

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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.