Home / 138,407.10-207,319.04-112,163.10

Finding the Fourth Proportional to 138,407.10, 207,319.04 and 112,163.10

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Solution

The fourth proportional to 138,407.10, 207,319.04 and 112,163.10 is: 168,008.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,407.10 : 207,319.04 = 112,163.10 : x
  2. Step 2: Convert to fraction form
    138,407.10/207,319.04 = 112,163.10/x
  3. Step 3: Cross multiply
    138,407.10x = 207,319.04 × 112,163.10
  4. Step 4: Simplify right side
    138,407.10x = 23,253,546,215.42
  5. Step 5: Solve for x
    x = 23,253,546,215.42/138,407.10
  6. Step 6: Final answer
    x = 168,008.33

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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.