Home / 126,257.52-189,638.40-78,956.76

Finding the Fourth Proportional to 126,257.52, 189,638.40 and 78,956.76

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Solution

The fourth proportional to 126,257.52, 189,638.40 and 78,956.76 is: 118,592.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,257.52 : 189,638.40 = 78,956.76 : x
  2. Step 2: Convert to fraction form
    126,257.52/189,638.40 = 78,956.76/x
  3. Step 3: Cross multiply
    126,257.52x = 189,638.40 × 78,956.76
  4. Step 4: Simplify right side
    126,257.52x = 14,973,233,635.58
  5. Step 5: Solve for x
    x = 14,973,233,635.58/126,257.52
  6. Step 6: Final answer
    x = 118,592.81

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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.