Home / 86,326.95-129,318.20-68,587.65

Finding the Fourth Proportional to 86,326.95, 129,318.20 and 68,587.65

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Solution

The fourth proportional to 86,326.95, 129,318.20 and 68,587.65 is: 102,744.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,326.95 : 129,318.20 = 68,587.65 : x
  2. Step 2: Convert to fraction form
    86,326.95/129,318.20 = 68,587.65/x
  3. Step 3: Cross multiply
    86,326.95x = 129,318.20 × 68,587.65
  4. Step 4: Simplify right side
    86,326.95x = 8,869,631,097.29
  5. Step 5: Solve for x
    x = 8,869,631,097.29/86,326.95
  6. Step 6: Final answer
    x = 102,744.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.