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Finding the Fourth Proportional to 109,543.97, 151,262.84 and 69,328.68

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Solution

The fourth proportional to 109,543.97, 151,262.84 and 69,328.68 is: 95,731.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,543.97 : 151,262.84 = 69,328.68 : x
  2. Step 2: Convert to fraction form
    109,543.97/151,262.84 = 69,328.68/x
  3. Step 3: Cross multiply
    109,543.97x = 151,262.84 × 69,328.68
  4. Step 4: Simplify right side
    109,543.97x = 10,486,852,683.61
  5. Step 5: Solve for x
    x = 10,486,852,683.61/109,543.97
  6. Step 6: Final answer
    x = 95,731.91

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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.