Home / 155,932.86-215,187.30-84,312.90

Finding the Fourth Proportional to 155,932.86, 215,187.30 and 84,312.90

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Solution

The fourth proportional to 155,932.86, 215,187.30 and 84,312.90 is: 116,351.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,932.86 : 215,187.30 = 84,312.90 : x
  2. Step 2: Convert to fraction form
    155,932.86/215,187.30 = 84,312.90/x
  3. Step 3: Cross multiply
    155,932.86x = 215,187.30 × 84,312.90
  4. Step 4: Simplify right side
    155,932.86x = 18,143,065,306.17
  5. Step 5: Solve for x
    x = 18,143,065,306.17/155,932.86
  6. Step 6: Final answer
    x = 116,351.78

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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.