Home / 138,912.32-208,397.68-45,410.72

Finding the Fourth Proportional to 138,912.32, 208,397.68 and 45,410.72

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Solution

The fourth proportional to 138,912.32, 208,397.68 and 45,410.72 is: 68,125.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,912.32 : 208,397.68 = 45,410.72 : x
  2. Step 2: Convert to fraction form
    138,912.32/208,397.68 = 45,410.72/x
  3. Step 3: Cross multiply
    138,912.32x = 208,397.68 × 45,410.72
  4. Step 4: Simplify right side
    138,912.32x = 9,463,488,695.13
  5. Step 5: Solve for x
    x = 9,463,488,695.13/138,912.32
  6. Step 6: Final answer
    x = 68,125.63

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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.