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Finding the Fourth Proportional to 131,785.98, 181,790.37 and 83,372.88

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Solution

The fourth proportional to 131,785.98, 181,790.37 and 83,372.88 is: 115,007.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,785.98 : 181,790.37 = 83,372.88 : x
  2. Step 2: Convert to fraction form
    131,785.98/181,790.37 = 83,372.88/x
  3. Step 3: Cross multiply
    131,785.98x = 181,790.37 × 83,372.88
  4. Step 4: Simplify right side
    131,785.98x = 15,156,386,703.17
  5. Step 5: Solve for x
    x = 15,156,386,703.17/131,785.98
  6. Step 6: Final answer
    x = 115,007.58

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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.