Home / 138,478.40-207,752.58-38,638.52

Finding the Fourth Proportional to 138,478.40, 207,752.58 and 38,638.52

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Solution

The fourth proportional to 138,478.40, 207,752.58 and 38,638.52 is: 57,967.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,478.40 : 207,752.58 = 38,638.52 : x
  2. Step 2: Convert to fraction form
    138,478.40/207,752.58 = 38,638.52/x
  3. Step 3: Cross multiply
    138,478.40x = 207,752.58 × 38,638.52
  4. Step 4: Simplify right side
    138,478.40x = 8,027,252,736.76
  5. Step 5: Solve for x
    x = 8,027,252,736.76/138,478.40
  6. Step 6: Final answer
    x = 57,967.55

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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.