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Finding the Fourth Proportional to 83,499.90, 125,541.45 and 81,750.30

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Solution

The fourth proportional to 83,499.90, 125,541.45 and 81,750.30 is: 122,910.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,499.90 : 125,541.45 = 81,750.30 : x
  2. Step 2: Convert to fraction form
    83,499.90/125,541.45 = 81,750.30/x
  3. Step 3: Cross multiply
    83,499.90x = 125,541.45 × 81,750.30
  4. Step 4: Simplify right side
    83,499.90x = 10,263,051,199.94
  5. Step 5: Solve for x
    x = 10,263,051,199.94/83,499.90
  6. Step 6: Final answer
    x = 122,910.94

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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.