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Finding the Fourth Proportional to 126,349.20, 189,490.80 and 37,578.80

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Solution

The fourth proportional to 126,349.20, 189,490.80 and 37,578.80 is: 56,358.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,349.20 : 189,490.80 = 37,578.80 : x
  2. Step 2: Convert to fraction form
    126,349.20/189,490.80 = 37,578.80/x
  3. Step 3: Cross multiply
    126,349.20x = 189,490.80 × 37,578.80
  4. Step 4: Simplify right side
    126,349.20x = 7,120,836,875.04
  5. Step 5: Solve for x
    x = 7,120,836,875.04/126,349.20
  6. Step 6: Final answer
    x = 56,358.39

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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.