Home / 84,834.40-127,251.60-72,911.20

Finding the Fourth Proportional to 84,834.40, 127,251.60 and 72,911.20

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Solution

The fourth proportional to 84,834.40, 127,251.60 and 72,911.20 is: 109,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,834.40 : 127,251.60 = 72,911.20 : x
  2. Step 2: Convert to fraction form
    84,834.40/127,251.60 = 72,911.20/x
  3. Step 3: Cross multiply
    84,834.40x = 127,251.60 × 72,911.20
  4. Step 4: Simplify right side
    84,834.40x = 9,278,066,857.92
  5. Step 5: Solve for x
    x = 9,278,066,857.92/84,834.40
  6. Step 6: Final answer
    x = 109,366.80

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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.