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Finding the Fourth Proportional to 84,905.70, 127,358.55 and 73,095.90

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Solution

The fourth proportional to 84,905.70, 127,358.55 and 73,095.90 is: 109,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,905.70 : 127,358.55 = 73,095.90 : x
  2. Step 2: Convert to fraction form
    84,905.70/127,358.55 = 73,095.90/x
  3. Step 3: Cross multiply
    84,905.70x = 127,358.55 × 73,095.90
  4. Step 4: Simplify right side
    84,905.70x = 9,309,387,834.95
  5. Step 5: Solve for x
    x = 9,309,387,834.95/84,905.70
  6. Step 6: Final answer
    x = 109,643.85

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Similar ratio
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1.5x scale

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.