Home / 126,252.48-189,630.90-78,951.72

Finding the Fourth Proportional to 126,252.48, 189,630.90 and 78,951.72

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Solution

The fourth proportional to 126,252.48, 189,630.90 and 78,951.72 is: 118,585.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,252.48 : 189,630.90 = 78,951.72 : x
  2. Step 2: Convert to fraction form
    126,252.48/189,630.90 = 78,951.72/x
  3. Step 3: Cross multiply
    126,252.48x = 189,630.90 × 78,951.72
  4. Step 4: Simplify right side
    126,252.48x = 14,971,685,720.15
  5. Step 5: Solve for x
    x = 14,971,685,720.15/126,252.48
  6. Step 6: Final answer
    x = 118,585.28

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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.