Home / 129,781.76-194,680.34-36,287.51

Finding the Fourth Proportional to 129,781.76, 194,680.34 and 36,287.51

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Solution

The fourth proportional to 129,781.76, 194,680.34 and 36,287.51 is: 54,433.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,781.76 : 194,680.34 = 36,287.51 : x
  2. Step 2: Convert to fraction form
    129,781.76/194,680.34 = 36,287.51/x
  3. Step 3: Cross multiply
    129,781.76x = 194,680.34 × 36,287.51
  4. Step 4: Simplify right side
    129,781.76x = 7,064,464,603.12
  5. Step 5: Solve for x
    x = 7,064,464,603.12/129,781.76
  6. Step 6: Final answer
    x = 54,433.42

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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.