Home / 126,439.38-189,686.40-67,266.45

Finding the Fourth Proportional to 126,439.38, 189,686.40 and 67,266.45

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Solution

The fourth proportional to 126,439.38, 189,686.40 and 67,266.45 is: 100,914.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,439.38 : 189,686.40 = 67,266.45 : x
  2. Step 2: Convert to fraction form
    126,439.38/189,686.40 = 67,266.45/x
  3. Step 3: Cross multiply
    126,439.38x = 189,686.40 × 67,266.45
  4. Step 4: Simplify right side
    126,439.38x = 12,759,530,741.28
  5. Step 5: Solve for x
    x = 12,759,530,741.28/126,439.38
  6. Step 6: Final answer
    x = 100,914.21

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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.