Home / 138,832.10-208,199.55-72,250.10

Finding the Fourth Proportional to 138,832.10, 208,199.55 and 72,250.10

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Solution

The fourth proportional to 138,832.10, 208,199.55 and 72,250.10 is: 108,349.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,832.10 : 208,199.55 = 72,250.10 : x
  2. Step 2: Convert to fraction form
    138,832.10/208,199.55 = 72,250.10/x
  3. Step 3: Cross multiply
    138,832.10x = 208,199.55 × 72,250.10
  4. Step 4: Simplify right side
    138,832.10x = 15,042,438,307.46
  5. Step 5: Solve for x
    x = 15,042,438,307.46/138,832.10
  6. Step 6: Final answer
    x = 108,349.86

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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.