Home / 143,573.05-198,132.70-79,049.80

Finding the Fourth Proportional to 143,573.05, 198,132.70 and 79,049.80

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Solution

The fourth proportional to 143,573.05, 198,132.70 and 79,049.80 is: 109,089.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,573.05 : 198,132.70 = 79,049.80 : x
  2. Step 2: Convert to fraction form
    143,573.05/198,132.70 = 79,049.80/x
  3. Step 3: Cross multiply
    143,573.05x = 198,132.70 × 79,049.80
  4. Step 4: Simplify right side
    143,573.05x = 15,662,350,308.46
  5. Step 5: Solve for x
    x = 15,662,350,308.46/143,573.05
  6. Step 6: Final answer
    x = 109,089.77

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1.5x scale

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.