Home / 138,731.10-208,193.85-88,932.30

Finding the Fourth Proportional to 138,731.10, 208,193.85 and 88,932.30

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Solution

The fourth proportional to 138,731.10, 208,193.85 and 88,932.30 is: 133,460.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,731.10 : 208,193.85 = 88,932.30 : x
  2. Step 2: Convert to fraction form
    138,731.10/208,193.85 = 88,932.30/x
  3. Step 3: Cross multiply
    138,731.10x = 208,193.85 × 88,932.30
  4. Step 4: Simplify right side
    138,731.10x = 18,515,157,926.36
  5. Step 5: Solve for x
    x = 18,515,157,926.36/138,731.10
  6. Step 6: Final answer
    x = 133,460.76

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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.