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Finding the Fourth Proportional to 158,600.12, 218,866.12 and 90,616.57

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Solution

The fourth proportional to 158,600.12, 218,866.12 and 90,616.57 is: 125,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,600.12 : 218,866.12 = 90,616.57 : x
  2. Step 2: Convert to fraction form
    158,600.12/218,866.12 = 90,616.57/x
  3. Step 3: Cross multiply
    158,600.12x = 218,866.12 × 90,616.57
  4. Step 4: Simplify right side
    158,600.12x = 19,832,896,309.90
  5. Step 5: Solve for x
    x = 19,832,896,309.90/158,600.12
  6. Step 6: Final answer
    x = 125,049.70

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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.