Home / 143,957.05-198,660.17-79,430.30

Finding the Fourth Proportional to 143,957.05, 198,660.17 and 79,430.30

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Solution

The fourth proportional to 143,957.05, 198,660.17 and 79,430.30 is: 109,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,957.05 : 198,660.17 = 79,430.30 : x
  2. Step 2: Convert to fraction form
    143,957.05/198,660.17 = 79,430.30/x
  3. Step 3: Cross multiply
    143,957.05x = 198,660.17 × 79,430.30
  4. Step 4: Simplify right side
    143,957.05x = 15,779,637,596.38
  5. Step 5: Solve for x
    x = 15,779,637,596.38/143,957.05
  6. Step 6: Final answer
    x = 109,613.51

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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.