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Finding the Fourth Proportional to 158,468.08, 218,686.26 and 86,850.76

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Solution

The fourth proportional to 158,468.08, 218,686.26 and 86,850.76 is: 119,854.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,468.08 : 218,686.26 = 86,850.76 : x
  2. Step 2: Convert to fraction form
    158,468.08/218,686.26 = 86,850.76/x
  3. Step 3: Cross multiply
    158,468.08x = 218,686.26 × 86,850.76
  4. Step 4: Simplify right side
    158,468.08x = 18,993,067,882.56
  5. Step 5: Solve for x
    x = 18,993,067,882.56/158,468.08
  6. Step 6: Final answer
    x = 119,854.22

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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.