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Finding the Fourth Proportional to 126,093.20, 189,139.80 and 125,218.40

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Solution

The fourth proportional to 126,093.20, 189,139.80 and 125,218.40 is: 187,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,093.20 : 189,139.80 = 125,218.40 : x
  2. Step 2: Convert to fraction form
    126,093.20/189,139.80 = 125,218.40/x
  3. Step 3: Cross multiply
    126,093.20x = 189,139.80 × 125,218.40
  4. Step 4: Simplify right side
    126,093.20x = 23,683,783,132.32
  5. Step 5: Solve for x
    x = 23,683,783,132.32/126,093.20
  6. Step 6: Final answer
    x = 187,827.60

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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.