Home / 143,646.48-198,229.14-79,117.56

Finding the Fourth Proportional to 143,646.48, 198,229.14 and 79,117.56

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Solution

The fourth proportional to 143,646.48, 198,229.14 and 79,117.56 is: 109,180.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,646.48 : 198,229.14 = 79,117.56 : x
  2. Step 2: Convert to fraction form
    143,646.48/198,229.14 = 79,117.56/x
  3. Step 3: Cross multiply
    143,646.48x = 198,229.14 × 79,117.56
  4. Step 4: Simplify right side
    143,646.48x = 15,683,405,877.70
  5. Step 5: Solve for x
    x = 15,683,405,877.70/143,646.48
  6. Step 6: Final answer
    x = 109,180.58

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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.