Home / 131,787.38-181,866.67-71,358.05

Finding the Fourth Proportional to 131,787.38, 181,866.67 and 71,358.05

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Solution

The fourth proportional to 131,787.38, 181,866.67 and 71,358.05 is: 98,474.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,787.38 : 181,866.67 = 71,358.05 : x
  2. Step 2: Convert to fraction form
    131,787.38/181,866.67 = 71,358.05/x
  3. Step 3: Cross multiply
    131,787.38x = 181,866.67 × 71,358.05
  4. Step 4: Simplify right side
    131,787.38x = 12,977,651,207.47
  5. Step 5: Solve for x
    x = 12,977,651,207.47/131,787.38
  6. Step 6: Final answer
    x = 98,474.16

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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.