Home / 128,110.60-192,165.90-126,142.30

Finding the Fourth Proportional to 128,110.60, 192,165.90 and 126,142.30

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Solution

The fourth proportional to 128,110.60, 192,165.90 and 126,142.30 is: 189,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,110.60 : 192,165.90 = 126,142.30 : x
  2. Step 2: Convert to fraction form
    128,110.60/192,165.90 = 126,142.30/x
  3. Step 3: Cross multiply
    128,110.60x = 192,165.90 × 126,142.30
  4. Step 4: Simplify right side
    128,110.60x = 24,240,248,607.57
  5. Step 5: Solve for x
    x = 24,240,248,607.57/128,110.60
  6. Step 6: Final answer
    x = 189,213.45

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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.