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Finding the Fourth Proportional to 84,937.60, 127,406.40 and 76,481.20

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Solution

The fourth proportional to 84,937.60, 127,406.40 and 76,481.20 is: 114,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,937.60 : 127,406.40 = 76,481.20 : x
  2. Step 2: Convert to fraction form
    84,937.60/127,406.40 = 76,481.20/x
  3. Step 3: Cross multiply
    84,937.60x = 127,406.40 × 76,481.20
  4. Step 4: Simplify right side
    84,937.60x = 9,744,194,359.68
  5. Step 5: Solve for x
    x = 9,744,194,359.68/84,937.60
  6. Step 6: Final answer
    x = 114,721.80

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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.