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Finding the Fourth Proportional to 126,312.80, 189,469.20 and 126,312.80

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Solution

The fourth proportional to 126,312.80, 189,469.20 and 126,312.80 is: 189,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,312.80 : 189,469.20 = 126,312.80 : x
  2. Step 2: Convert to fraction form
    126,312.80/189,469.20 = 126,312.80/x
  3. Step 3: Cross multiply
    126,312.80x = 189,469.20 × 126,312.80
  4. Step 4: Simplify right side
    126,312.80x = 23,932,385,165.76
  5. Step 5: Solve for x
    x = 23,932,385,165.76/126,312.80
  6. Step 6: Final answer
    x = 189,469.20

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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.