Home / 143,569.67-198,128.04-79,046.42

Finding the Fourth Proportional to 143,569.67, 198,128.04 and 79,046.42

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Solution

The fourth proportional to 143,569.67, 198,128.04 and 79,046.42 is: 109,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,569.67 : 198,128.04 = 79,046.42 : x
  2. Step 2: Convert to fraction form
    143,569.67/198,128.04 = 79,046.42/x
  3. Step 3: Cross multiply
    143,569.67x = 198,128.04 × 79,046.42
  4. Step 4: Simplify right side
    143,569.67x = 15,661,312,263.62
  5. Step 5: Solve for x
    x = 15,661,312,263.62/143,569.67
  6. Step 6: Final answer
    x = 109,085.10

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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.