Home / 119,850.18-165,334.01-78,432.66

Finding the Fourth Proportional to 119,850.18, 165,334.01 and 78,432.66

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Solution

The fourth proportional to 119,850.18, 165,334.01 and 78,432.66 is: 108,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,850.18 : 165,334.01 = 78,432.66 : x
  2. Step 2: Convert to fraction form
    119,850.18/165,334.01 = 78,432.66/x
  3. Step 3: Cross multiply
    119,850.18x = 165,334.01 × 78,432.66
  4. Step 4: Simplify right side
    119,850.18x = 12,967,585,800.60
  5. Step 5: Solve for x
    x = 12,967,585,800.60/119,850.18
  6. Step 6: Final answer
    x = 108,198.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.