Home / 126,869.17-175,029.72-81,540.87

Finding the Fourth Proportional to 126,869.17, 175,029.72 and 81,540.87

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Solution

The fourth proportional to 126,869.17, 175,029.72 and 81,540.87 is: 112,494.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,869.17 : 175,029.72 = 81,540.87 : x
  2. Step 2: Convert to fraction form
    126,869.17/175,029.72 = 81,540.87/x
  3. Step 3: Cross multiply
    126,869.17x = 175,029.72 × 81,540.87
  4. Step 4: Simplify right side
    126,869.17x = 14,272,075,644.66
  5. Step 5: Solve for x
    x = 14,272,075,644.66/126,869.17
  6. Step 6: Final answer
    x = 112,494.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.