Home / 126,292.72-189,311.08-81,947.64

Finding the Fourth Proportional to 126,292.72, 189,311.08 and 81,947.64

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Solution

The fourth proportional to 126,292.72, 189,311.08 and 81,947.64 is: 122,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,292.72 : 189,311.08 = 81,947.64 : x
  2. Step 2: Convert to fraction form
    126,292.72/189,311.08 = 81,947.64/x
  3. Step 3: Cross multiply
    126,292.72x = 189,311.08 × 81,947.64
  4. Step 4: Simplify right side
    126,292.72x = 15,513,596,231.85
  5. Step 5: Solve for x
    x = 15,513,596,231.85/126,292.72
  6. Step 6: Final answer
    x = 122,838.40

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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.