Home / 79,678.16-119,517.29-76,218.83

Finding the Fourth Proportional to 79,678.16, 119,517.29 and 76,218.83

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Solution

The fourth proportional to 79,678.16, 119,517.29 and 76,218.83 is: 114,328.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,678.16 : 119,517.29 = 76,218.83 : x
  2. Step 2: Convert to fraction form
    79,678.16/119,517.29 = 76,218.83/x
  3. Step 3: Cross multiply
    79,678.16x = 119,517.29 × 76,218.83
  4. Step 4: Simplify right side
    79,678.16x = 9,109,467,763.90
  5. Step 5: Solve for x
    x = 9,109,467,763.90/79,678.16
  6. Step 6: Final answer
    x = 114,328.29

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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.