Home / 127,285.11-175,508.52-81,282.78

Finding the Fourth Proportional to 127,285.11, 175,508.52 and 81,282.78

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Solution

The fourth proportional to 127,285.11, 175,508.52 and 81,282.78 is: 112,077.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,285.11 : 175,508.52 = 81,282.78 : x
  2. Step 2: Convert to fraction form
    127,285.11/175,508.52 = 81,282.78/x
  3. Step 3: Cross multiply
    127,285.11x = 175,508.52 × 81,282.78
  4. Step 4: Simplify right side
    127,285.11x = 14,265,820,419.29
  5. Step 5: Solve for x
    x = 14,265,820,419.29/127,285.11
  6. Step 6: Final answer
    x = 112,077.68

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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.