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Finding the Fourth Proportional to 131,879.85, 181,993.95 and 71,452.04

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Solution

The fourth proportional to 131,879.85, 181,993.95 and 71,452.04 is: 98,603.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,879.85 : 181,993.95 = 71,452.04 : x
  2. Step 2: Convert to fraction form
    131,879.85/181,993.95 = 71,452.04/x
  3. Step 3: Cross multiply
    131,879.85x = 181,993.95 × 71,452.04
  4. Step 4: Simplify right side
    131,879.85x = 13,003,838,085.19
  5. Step 5: Solve for x
    x = 13,003,838,085.19/131,879.85
  6. Step 6: Final answer
    x = 98,603.68

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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.