Home / 158,778.23-219,114.32-87,158.43

Finding the Fourth Proportional to 158,778.23, 219,114.32 and 87,158.43

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Solution

The fourth proportional to 158,778.23, 219,114.32 and 87,158.43 is: 120,278.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,778.23 : 219,114.32 = 87,158.43 : x
  2. Step 2: Convert to fraction form
    158,778.23/219,114.32 = 87,158.43/x
  3. Step 3: Cross multiply
    158,778.23x = 219,114.32 × 87,158.43
  4. Step 4: Simplify right side
    158,778.23x = 19,097,659,685.93
  5. Step 5: Solve for x
    x = 19,097,659,685.93/158,778.23
  6. Step 6: Final answer
    x = 120,278.83

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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.