Home / 131,330.08-181,310.16-86,747.68

Finding the Fourth Proportional to 131,330.08, 181,310.16 and 86,747.68

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Solution

The fourth proportional to 131,330.08, 181,310.16 and 86,747.68 is: 119,761.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,330.08 : 181,310.16 = 86,747.68 : x
  2. Step 2: Convert to fraction form
    131,330.08/181,310.16 = 86,747.68/x
  3. Step 3: Cross multiply
    131,330.08x = 181,310.16 × 86,747.68
  4. Step 4: Simplify right side
    131,330.08x = 15,728,235,740.43
  5. Step 5: Solve for x
    x = 15,728,235,740.43/131,330.08
  6. Step 6: Final answer
    x = 119,761.11

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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.