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Finding the Fourth Proportional to 126,061.70, 189,092.55 and 66,866.90

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Solution

The fourth proportional to 126,061.70, 189,092.55 and 66,866.90 is: 100,300.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,061.70 : 189,092.55 = 66,866.90 : x
  2. Step 2: Convert to fraction form
    126,061.70/189,092.55 = 66,866.90/x
  3. Step 3: Cross multiply
    126,061.70x = 189,092.55 × 66,866.90
  4. Step 4: Simplify right side
    126,061.70x = 12,644,032,631.60
  5. Step 5: Solve for x
    x = 12,644,032,631.60/126,061.70
  6. Step 6: Final answer
    x = 100,300.35

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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.