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Finding the Fourth Proportional to 103,279.60, 154,919.40 and 63,881.20

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Solution

The fourth proportional to 103,279.60, 154,919.40 and 63,881.20 is: 95,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,279.60 : 154,919.40 = 63,881.20 : x
  2. Step 2: Convert to fraction form
    103,279.60/154,919.40 = 63,881.20/x
  3. Step 3: Cross multiply
    103,279.60x = 154,919.40 × 63,881.20
  4. Step 4: Simplify right side
    103,279.60x = 9,896,437,175.28
  5. Step 5: Solve for x
    x = 9,896,437,175.28/103,279.60
  6. Step 6: Final answer
    x = 95,821.80

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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.