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Finding the Fourth Proportional to 131,761.76, 181,829.76 and 71,330.96

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Solution

The fourth proportional to 131,761.76, 181,829.76 and 71,330.96 is: 98,435.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,761.76 : 181,829.76 = 71,330.96 : x
  2. Step 2: Convert to fraction form
    131,761.76/181,829.76 = 71,330.96/x
  3. Step 3: Cross multiply
    131,761.76x = 181,829.76 × 71,330.96
  4. Step 4: Simplify right side
    131,761.76x = 12,970,091,337.37
  5. Step 5: Solve for x
    x = 12,970,091,337.37/131,761.76
  6. Step 6: Final answer
    x = 98,435.93

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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.