Home / 143,972.88-198,670.11-92,987.83

Finding the Fourth Proportional to 143,972.88, 198,670.11 and 92,987.83

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Solution

The fourth proportional to 143,972.88, 198,670.11 and 92,987.83 is: 128,315.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,972.88 : 198,670.11 = 92,987.83 : x
  2. Step 2: Convert to fraction form
    143,972.88/198,670.11 = 92,987.83/x
  3. Step 3: Cross multiply
    143,972.88x = 198,670.11 × 92,987.83
  4. Step 4: Simplify right side
    143,972.88x = 18,473,902,414.76
  5. Step 5: Solve for x
    x = 18,473,902,414.76/143,972.88
  6. Step 6: Final answer
    x = 128,315.16

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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.