Home / 136,334.90-188,140.38-78,982.04

Finding the Fourth Proportional to 136,334.90, 188,140.38 and 78,982.04

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Solution

The fourth proportional to 136,334.90, 188,140.38 and 78,982.04 is: 108,994.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,334.90 : 188,140.38 = 78,982.04 : x
  2. Step 2: Convert to fraction form
    136,334.90/188,140.38 = 78,982.04/x
  3. Step 3: Cross multiply
    136,334.90x = 188,140.38 × 78,982.04
  4. Step 4: Simplify right side
    136,334.90x = 14,859,711,018.78
  5. Step 5: Solve for x
    x = 14,859,711,018.78/136,334.90
  6. Step 6: Final answer
    x = 108,994.18

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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.