Home / 158,442.15-218,655.24-86,826.75

Finding the Fourth Proportional to 158,442.15, 218,655.24 and 86,826.75

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Solution

The fourth proportional to 158,442.15, 218,655.24 and 86,826.75 is: 119,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,442.15 : 218,655.24 = 86,826.75 : x
  2. Step 2: Convert to fraction form
    158,442.15/218,655.24 = 86,826.75/x
  3. Step 3: Cross multiply
    158,442.15x = 218,655.24 × 86,826.75
  4. Step 4: Simplify right side
    158,442.15x = 18,985,123,859.67
  5. Step 5: Solve for x
    x = 18,985,123,859.67/158,442.15
  6. Step 6: Final answer
    x = 119,823.70

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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.