Home / 138,755.91-208,129.28-58,772.51

Finding the Fourth Proportional to 138,755.91, 208,129.28 and 58,772.51

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Solution

The fourth proportional to 138,755.91, 208,129.28 and 58,772.51 is: 88,156.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,755.91 : 208,129.28 = 58,772.51 : x
  2. Step 2: Convert to fraction form
    138,755.91/208,129.28 = 58,772.51/x
  3. Step 3: Cross multiply
    138,755.91x = 208,129.28 × 58,772.51
  4. Step 4: Simplify right side
    138,755.91x = 12,232,278,855.58
  5. Step 5: Solve for x
    x = 12,232,278,855.58/138,755.91
  6. Step 6: Final answer
    x = 88,156.81

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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.