Home / 172,439.40-238,032.57-129,543.31

Finding the Fourth Proportional to 172,439.40, 238,032.57 and 129,543.31

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Solution

The fourth proportional to 172,439.40, 238,032.57 and 129,543.31 is: 178,819.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,439.40 : 238,032.57 = 129,543.31 : x
  2. Step 2: Convert to fraction form
    172,439.40/238,032.57 = 129,543.31/x
  3. Step 3: Cross multiply
    172,439.40x = 238,032.57 × 129,543.31
  4. Step 4: Simplify right side
    172,439.40x = 30,835,527,680.48
  5. Step 5: Solve for x
    x = 30,835,527,680.48/172,439.40
  6. Step 6: Final answer
    x = 178,819.51

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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.