Home / 129,630.20-194,445.30-42,078.20

Finding the Fourth Proportional to 129,630.20, 194,445.30 and 42,078.20

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Solution

The fourth proportional to 129,630.20, 194,445.30 and 42,078.20 is: 63,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,630.20 : 194,445.30 = 42,078.20 : x
  2. Step 2: Convert to fraction form
    129,630.20/194,445.30 = 42,078.20/x
  3. Step 3: Cross multiply
    129,630.20x = 194,445.30 × 42,078.20
  4. Step 4: Simplify right side
    129,630.20x = 8,181,908,222.46
  5. Step 5: Solve for x
    x = 8,181,908,222.46/129,630.20
  6. Step 6: Final answer
    x = 63,117.30

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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.