Home / 131,640.67-181,654.12-74,285.32

Finding the Fourth Proportional to 131,640.67, 181,654.12 and 74,285.32

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Solution

The fourth proportional to 131,640.67, 181,654.12 and 74,285.32 is: 102,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,640.67 : 181,654.12 = 74,285.32 : x
  2. Step 2: Convert to fraction form
    131,640.67/181,654.12 = 74,285.32/x
  3. Step 3: Cross multiply
    131,640.67x = 181,654.12 × 74,285.32
  4. Step 4: Simplify right side
    131,640.67x = 13,494,234,223.05
  5. Step 5: Solve for x
    x = 13,494,234,223.05/131,640.67
  6. Step 6: Final answer
    x = 102,508.10

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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.