Home / 143,956.30-198,659.14-79,429.55

Finding the Fourth Proportional to 143,956.30, 198,659.14 and 79,429.55

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Solution

The fourth proportional to 143,956.30, 198,659.14 and 79,429.55 is: 109,612.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,956.30 : 198,659.14 = 79,429.55 : x
  2. Step 2: Convert to fraction form
    143,956.30/198,659.14 = 79,429.55/x
  3. Step 3: Cross multiply
    143,956.30x = 198,659.14 × 79,429.55
  4. Step 4: Simplify right side
    143,956.30x = 15,779,406,801.30
  5. Step 5: Solve for x
    x = 15,779,406,801.30/143,956.30
  6. Step 6: Final answer
    x = 109,612.48

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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.