Home / 128,110.10-192,165.15-126,141.80

Finding the Fourth Proportional to 128,110.10, 192,165.15 and 126,141.80

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Solution

The fourth proportional to 128,110.10, 192,165.15 and 126,141.80 is: 189,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,110.10 : 192,165.15 = 126,141.80 : x
  2. Step 2: Convert to fraction form
    128,110.10/192,165.15 = 126,141.80/x
  3. Step 3: Cross multiply
    128,110.10x = 192,165.15 × 126,141.80
  4. Step 4: Simplify right side
    128,110.10x = 24,240,057,918.27
  5. Step 5: Solve for x
    x = 24,240,057,918.27/128,110.10
  6. Step 6: Final answer
    x = 189,212.70

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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.