Home / 138,410.30-207,615.59-38,570.78

Finding the Fourth Proportional to 138,410.30, 207,615.59 and 38,570.78

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Solution

The fourth proportional to 138,410.30, 207,615.59 and 38,570.78 is: 57,856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,410.30 : 207,615.59 = 38,570.78 : x
  2. Step 2: Convert to fraction form
    138,410.30/207,615.59 = 38,570.78/x
  3. Step 3: Cross multiply
    138,410.30x = 207,615.59 × 38,570.78
  4. Step 4: Simplify right side
    138,410.30x = 8,007,895,246.46
  5. Step 5: Solve for x
    x = 8,007,895,246.46/138,410.30
  6. Step 6: Final answer
    x = 57,856.21

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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.