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Finding the Fourth Proportional to 103,350.60, 142,585.56 and 65,099.88

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Solution

The fourth proportional to 103,350.60, 142,585.56 and 65,099.88 is: 89,813.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,350.60 : 142,585.56 = 65,099.88 : x
  2. Step 2: Convert to fraction form
    103,350.60/142,585.56 = 65,099.88/x
  3. Step 3: Cross multiply
    103,350.60x = 142,585.56 × 65,099.88
  4. Step 4: Simplify right side
    103,350.60x = 9,282,302,845.73
  5. Step 5: Solve for x
    x = 9,282,302,845.73/103,350.60
  6. Step 6: Final answer
    x = 89,813.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.