Home / 143,869.95-198,535.96-79,341.91

Finding the Fourth Proportional to 143,869.95, 198,535.96 and 79,341.91

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Solution

The fourth proportional to 143,869.95, 198,535.96 and 79,341.91 is: 109,489.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,869.95 : 198,535.96 = 79,341.91 : x
  2. Step 2: Convert to fraction form
    143,869.95/198,535.96 = 79,341.91/x
  3. Step 3: Cross multiply
    143,869.95x = 198,535.96 × 79,341.91
  4. Step 4: Simplify right side
    143,869.95x = 15,752,222,270.08
  5. Step 5: Solve for x
    x = 15,752,222,270.08/143,869.95
  6. Step 6: Final answer
    x = 109,489.31

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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.