Home / 126,307.63-189,446.09-78,926.95

Finding the Fourth Proportional to 126,307.63, 189,446.09 and 78,926.95

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Solution

The fourth proportional to 126,307.63, 189,446.09 and 78,926.95 is: 118,380.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,307.63 : 189,446.09 = 78,926.95 : x
  2. Step 2: Convert to fraction form
    126,307.63/189,446.09 = 78,926.95/x
  3. Step 3: Cross multiply
    126,307.63x = 189,446.09 × 78,926.95
  4. Step 4: Simplify right side
    126,307.63x = 14,952,401,204.88
  5. Step 5: Solve for x
    x = 14,952,401,204.88/126,307.63
  6. Step 6: Final answer
    x = 118,380.83

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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.