Home / 138,278.25-207,592.43-84,838.91

Finding the Fourth Proportional to 138,278.25, 207,592.43 and 84,838.91

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Solution

The fourth proportional to 138,278.25, 207,592.43 and 84,838.91 is: 127,365.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,278.25 : 207,592.43 = 84,838.91 : x
  2. Step 2: Convert to fraction form
    138,278.25/207,592.43 = 84,838.91/x
  3. Step 3: Cross multiply
    138,278.25x = 207,592.43 × 84,838.91
  4. Step 4: Simplify right side
    138,278.25x = 17,611,914,023.29
  5. Step 5: Solve for x
    x = 17,611,914,023.29/138,278.25
  6. Step 6: Final answer
    x = 127,365.76

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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.