Home / 129,972.40-195,035.12-55,087.08

Finding the Fourth Proportional to 129,972.40, 195,035.12 and 55,087.08

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Solution

The fourth proportional to 129,972.40, 195,035.12 and 55,087.08 is: 82,663.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,972.40 : 195,035.12 = 55,087.08 : x
  2. Step 2: Convert to fraction form
    129,972.40/195,035.12 = 55,087.08/x
  3. Step 3: Cross multiply
    129,972.40x = 195,035.12 × 55,087.08
  4. Step 4: Simplify right side
    129,972.40x = 10,743,915,258.25
  5. Step 5: Solve for x
    x = 10,743,915,258.25/129,972.40
  6. Step 6: Final answer
    x = 82,663.05

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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.