Home / 158,539.12-218,778.18-86,917.57

Finding the Fourth Proportional to 158,539.12, 218,778.18 and 86,917.57

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Solution

The fourth proportional to 158,539.12, 218,778.18 and 86,917.57 is: 119,943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,539.12 : 218,778.18 = 86,917.57 : x
  2. Step 2: Convert to fraction form
    158,539.12/218,778.18 = 86,917.57/x
  3. Step 3: Cross multiply
    158,539.12x = 218,778.18 × 86,917.57
  4. Step 4: Simplify right side
    158,539.12x = 19,015,667,774.62
  5. Step 5: Solve for x
    x = 19,015,667,774.62/158,539.12
  6. Step 6: Final answer
    x = 119,943.06

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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.