Home / 78,230.04-117,344.82-67,668.66

Finding the Fourth Proportional to 78,230.04, 117,344.82 and 67,668.66

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Solution

The fourth proportional to 78,230.04, 117,344.82 and 67,668.66 is: 101,502.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,230.04 : 117,344.82 = 67,668.66 : x
  2. Step 2: Convert to fraction form
    78,230.04/117,344.82 = 67,668.66/x
  3. Step 3: Cross multiply
    78,230.04x = 117,344.82 × 67,668.66
  4. Step 4: Simplify right side
    78,230.04x = 7,940,566,727.34
  5. Step 5: Solve for x
    x = 7,940,566,727.34/78,230.04
  6. Step 6: Final answer
    x = 101,502.78

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1.5x scale

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.