Home / 119,701.26-165,065-78,876.04

Finding the Fourth Proportional to 119,701.26, 165,065 and 78,876.04

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Solution

The fourth proportional to 119,701.26, 165,065 and 78,876.04 is: 108,768.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,701.26 : 165,065 = 78,876.04 : x
  2. Step 2: Convert to fraction form
    119,701.26/165,065 = 78,876.04/x
  3. Step 3: Cross multiply
    119,701.26x = 165,065 × 78,876.04
  4. Step 4: Simplify right side
    119,701.26x = 13,019,673,542.60
  5. Step 5: Solve for x
    x = 13,019,673,542.60/119,701.26
  6. Step 6: Final answer
    x = 108,768.06

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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.