Home / 143,960.13-198,663.66-79,429.96

Finding the Fourth Proportional to 143,960.13, 198,663.66 and 79,429.96

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Solution

The fourth proportional to 143,960.13, 198,663.66 and 79,429.96 is: 109,612.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,960.13 : 198,663.66 = 79,429.96 : x
  2. Step 2: Convert to fraction form
    143,960.13/198,663.66 = 79,429.96/x
  3. Step 3: Cross multiply
    143,960.13x = 198,663.66 × 79,429.96
  4. Step 4: Simplify right side
    143,960.13x = 15,779,846,899.29
  5. Step 5: Solve for x
    x = 15,779,846,899.29/143,960.13
  6. Step 6: Final answer
    x = 109,612.62

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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.