Home / 126,692.40-189,961.80-63,438.96

Finding the Fourth Proportional to 126,692.40, 189,961.80 and 63,438.96

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Solution

The fourth proportional to 126,692.40, 189,961.80 and 63,438.96 is: 95,119.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,692.40 : 189,961.80 = 63,438.96 : x
  2. Step 2: Convert to fraction form
    126,692.40/189,961.80 = 63,438.96/x
  3. Step 3: Cross multiply
    126,692.40x = 189,961.80 × 63,438.96
  4. Step 4: Simplify right side
    126,692.40x = 12,050,979,031.73
  5. Step 5: Solve for x
    x = 12,050,979,031.73/126,692.40
  6. Step 6: Final answer
    x = 95,119.98

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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.