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Finding the Fourth Proportional to 124,369.68, 171,630.96 and 67,781.18

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Solution

The fourth proportional to 124,369.68, 171,630.96 and 67,781.18 is: 93,538.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,369.68 : 171,630.96 = 67,781.18 : x
  2. Step 2: Convert to fraction form
    124,369.68/171,630.96 = 67,781.18/x
  3. Step 3: Cross multiply
    124,369.68x = 171,630.96 × 67,781.18
  4. Step 4: Simplify right side
    124,369.68x = 11,633,348,993.33
  5. Step 5: Solve for x
    x = 11,633,348,993.33/124,369.68
  6. Step 6: Final answer
    x = 93,538.47

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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.