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Finding the Fourth Proportional to 119,680.80, 179,434.80 and 67,106.40

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Solution

The fourth proportional to 119,680.80, 179,434.80 and 67,106.40 is: 100,611.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,680.80 : 179,434.80 = 67,106.40 : x
  2. Step 2: Convert to fraction form
    119,680.80/179,434.80 = 67,106.40/x
  3. Step 3: Cross multiply
    119,680.80x = 179,434.80 × 67,106.40
  4. Step 4: Simplify right side
    119,680.80x = 12,041,223,462.72
  5. Step 5: Solve for x
    x = 12,041,223,462.72/119,680.80
  6. Step 6: Final answer
    x = 100,611.15

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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.