Home / 143,737.48-198,366.40-79,206.61

Finding the Fourth Proportional to 143,737.48, 198,366.40 and 79,206.61

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Solution

The fourth proportional to 143,737.48, 198,366.40 and 79,206.61 is: 109,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,737.48 : 198,366.40 = 79,206.61 : x
  2. Step 2: Convert to fraction form
    143,737.48/198,366.40 = 79,206.61/x
  3. Step 3: Cross multiply
    143,737.48x = 198,366.40 × 79,206.61
  4. Step 4: Simplify right side
    143,737.48x = 15,711,929,090.07
  5. Step 5: Solve for x
    x = 15,711,929,090.07/143,737.48
  6. Step 6: Final answer
    x = 109,309.90

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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.