Home / 158,375.45-218,558.18-86,758.05

Finding the Fourth Proportional to 158,375.45, 218,558.18 and 86,758.05

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Solution

The fourth proportional to 158,375.45, 218,558.18 and 86,758.05 is: 119,726.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,375.45 : 218,558.18 = 86,758.05 : x
  2. Step 2: Convert to fraction form
    158,375.45/218,558.18 = 86,758.05/x
  3. Step 3: Cross multiply
    158,375.45x = 218,558.18 × 86,758.05
  4. Step 4: Simplify right side
    158,375.45x = 18,961,681,074.56
  5. Step 5: Solve for x
    x = 18,961,681,074.56/158,375.45
  6. Step 6: Final answer
    x = 119,726.14

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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.