Home / 131,508.34-181,472.40-74,149.72

Finding the Fourth Proportional to 131,508.34, 181,472.40 and 74,149.72

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Solution

The fourth proportional to 131,508.34, 181,472.40 and 74,149.72 is: 102,321.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,508.34 : 181,472.40 = 74,149.72 : x
  2. Step 2: Convert to fraction form
    131,508.34/181,472.40 = 74,149.72/x
  3. Step 3: Cross multiply
    131,508.34x = 181,472.40 × 74,149.72
  4. Step 4: Simplify right side
    131,508.34x = 13,456,127,647.73
  5. Step 5: Solve for x
    x = 13,456,127,647.73/131,508.34
  6. Step 6: Final answer
    x = 102,321.48

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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.