Home / 131,871.59-181,982.57-71,443.77

Finding the Fourth Proportional to 131,871.59, 181,982.57 and 71,443.77

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Solution

The fourth proportional to 131,871.59, 181,982.57 and 71,443.77 is: 98,592.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,871.59 : 181,982.57 = 71,443.77 : x
  2. Step 2: Convert to fraction form
    131,871.59/181,982.57 = 71,443.77/x
  3. Step 3: Cross multiply
    131,871.59x = 181,982.57 × 71,443.77
  4. Step 4: Simplify right side
    131,871.59x = 13,001,520,517.87
  5. Step 5: Solve for x
    x = 13,001,520,517.87/131,871.59
  6. Step 6: Final answer
    x = 98,592.28

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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.