Home / 126,281.18-189,425.87-66,294.50

Finding the Fourth Proportional to 126,281.18, 189,425.87 and 66,294.50

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Solution

The fourth proportional to 126,281.18, 189,425.87 and 66,294.50 is: 99,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,281.18 : 189,425.87 = 66,294.50 : x
  2. Step 2: Convert to fraction form
    126,281.18/189,425.87 = 66,294.50/x
  3. Step 3: Cross multiply
    126,281.18x = 189,425.87 × 66,294.50
  4. Step 4: Simplify right side
    126,281.18x = 12,557,893,187.78
  5. Step 5: Solve for x
    x = 12,557,893,187.78/126,281.18
  6. Step 6: Final answer
    x = 99,443.90

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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.