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Finding the Fourth Proportional to 105,508.92, 145,613.94 and 67,269.84

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Solution

The fourth proportional to 105,508.92, 145,613.94 and 67,269.84 is: 92,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,508.92 : 145,613.94 = 67,269.84 : x
  2. Step 2: Convert to fraction form
    105,508.92/145,613.94 = 67,269.84/x
  3. Step 3: Cross multiply
    105,508.92x = 145,613.94 × 67,269.84
  4. Step 4: Simplify right side
    105,508.92x = 9,795,426,445.57
  5. Step 5: Solve for x
    x = 9,795,426,445.57/105,508.92
  6. Step 6: Final answer
    x = 92,839.79

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1.5x scale

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.