Home / 123,905.20-185,930.70-45,027.40

Finding the Fourth Proportional to 123,905.20, 185,930.70 and 45,027.40

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Solution

The fourth proportional to 123,905.20, 185,930.70 and 45,027.40 is: 67,567.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,905.20 : 185,930.70 = 45,027.40 : x
  2. Step 2: Convert to fraction form
    123,905.20/185,930.70 = 45,027.40/x
  3. Step 3: Cross multiply
    123,905.20x = 185,930.70 × 45,027.40
  4. Step 4: Simplify right side
    123,905.20x = 8,371,976,001.18
  5. Step 5: Solve for x
    x = 8,371,976,001.18/123,905.20
  6. Step 6: Final answer
    x = 67,567.59

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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.