Home / 154,719.36-231,909.12-79,844.80

Finding the Fourth Proportional to 154,719.36, 231,909.12 and 79,844.80

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Solution

The fourth proportional to 154,719.36, 231,909.12 and 79,844.80 is: 119,679.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,719.36 : 231,909.12 = 79,844.80 : x
  2. Step 2: Convert to fraction form
    154,719.36/231,909.12 = 79,844.80/x
  3. Step 3: Cross multiply
    154,719.36x = 231,909.12 × 79,844.80
  4. Step 4: Simplify right side
    154,719.36x = 18,516,737,304.58
  5. Step 5: Solve for x
    x = 18,516,737,304.58/154,719.36
  6. Step 6: Final answer
    x = 119,679.51

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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.