Home / 138,357.72-207,515.16-88,784.46

Finding the Fourth Proportional to 138,357.72, 207,515.16 and 88,784.46

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Solution

The fourth proportional to 138,357.72, 207,515.16 and 88,784.46 is: 133,162.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,357.72 : 207,515.16 = 88,784.46 : x
  2. Step 2: Convert to fraction form
    138,357.72/207,515.16 = 88,784.46/x
  3. Step 3: Cross multiply
    138,357.72x = 207,515.16 × 88,784.46
  4. Step 4: Simplify right side
    138,357.72x = 18,424,121,422.41
  5. Step 5: Solve for x
    x = 18,424,121,422.41/138,357.72
  6. Step 6: Final answer
    x = 133,162.94

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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.