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Finding the Fourth Proportional to 91,894.40, 137,582.40 and 89,302.40

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Solution

The fourth proportional to 91,894.40, 137,582.40 and 89,302.40 is: 133,701.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,894.40 : 137,582.40 = 89,302.40 : x
  2. Step 2: Convert to fraction form
    91,894.40/137,582.40 = 89,302.40/x
  3. Step 3: Cross multiply
    91,894.40x = 137,582.40 × 89,302.40
  4. Step 4: Simplify right side
    91,894.40x = 12,286,438,517.76
  5. Step 5: Solve for x
    x = 12,286,438,517.76/91,894.40
  6. Step 6: Final answer
    x = 133,701.71

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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.