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Finding the Fourth Proportional to 131,188.96, 181,041.04 and 71,572.96

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Solution

The fourth proportional to 131,188.96, 181,041.04 and 71,572.96 is: 98,770.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,188.96 : 181,041.04 = 71,572.96 : x
  2. Step 2: Convert to fraction form
    131,188.96/181,041.04 = 71,572.96/x
  3. Step 3: Cross multiply
    131,188.96x = 181,041.04 × 71,572.96
  4. Step 4: Simplify right side
    131,188.96x = 12,957,643,114.28
  5. Step 5: Solve for x
    x = 12,957,643,114.28/131,188.96
  6. Step 6: Final answer
    x = 98,770.83

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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.