Home / 138,478.43-207,752.67-38,638.58

Finding the Fourth Proportional to 138,478.43, 207,752.67 and 38,638.58

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Solution

The fourth proportional to 138,478.43, 207,752.67 and 38,638.58 is: 57,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,478.43 : 207,752.67 = 38,638.58 : x
  2. Step 2: Convert to fraction form
    138,478.43/207,752.67 = 38,638.58/x
  3. Step 3: Cross multiply
    138,478.43x = 207,752.67 × 38,638.58
  4. Step 4: Simplify right side
    138,478.43x = 8,027,267,121.25
  5. Step 5: Solve for x
    x = 8,027,267,121.25/138,478.43
  6. Step 6: Final answer
    x = 57,967.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.