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Finding the Fourth Proportional to 83,307.60, 124,961.40 and 74,122.20

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Solution

The fourth proportional to 83,307.60, 124,961.40 and 74,122.20 is: 111,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,307.60 : 124,961.40 = 74,122.20 : x
  2. Step 2: Convert to fraction form
    83,307.60/124,961.40 = 74,122.20/x
  3. Step 3: Cross multiply
    83,307.60x = 124,961.40 × 74,122.20
  4. Step 4: Simplify right side
    83,307.60x = 9,262,413,883.08
  5. Step 5: Solve for x
    x = 9,262,413,883.08/83,307.60
  6. Step 6: Final answer
    x = 111,183.30

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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.