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Finding the Fourth Proportional to 89,348.64, 133,928.61 and 68,242.71

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Solution

The fourth proportional to 89,348.64, 133,928.61 and 68,242.71 is: 102,292.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,348.64 : 133,928.61 = 68,242.71 : x
  2. Step 2: Convert to fraction form
    89,348.64/133,928.61 = 68,242.71/x
  3. Step 3: Cross multiply
    89,348.64x = 133,928.61 × 68,242.71
  4. Step 4: Simplify right side
    89,348.64x = 9,139,651,292.93
  5. Step 5: Solve for x
    x = 9,139,651,292.93/89,348.64
  6. Step 6: Final answer
    x = 102,292.00

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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.