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Finding the Fourth Proportional to 129,690.80, 194,104.20 and 94,050.80

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Solution

The fourth proportional to 129,690.80, 194,104.20 and 94,050.80 is: 140,762.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,690.80 : 194,104.20 = 94,050.80 : x
  2. Step 2: Convert to fraction form
    129,690.80/194,104.20 = 94,050.80/x
  3. Step 3: Cross multiply
    129,690.80x = 194,104.20 × 94,050.80
  4. Step 4: Simplify right side
    129,690.80x = 18,255,655,293.36
  5. Step 5: Solve for x
    x = 18,255,655,293.36/129,690.80
  6. Step 6: Final answer
    x = 140,762.92

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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.