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Finding the Fourth Proportional to 143,877.68, 198,553.68 and 79,354.33

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Solution

The fourth proportional to 143,877.68, 198,553.68 and 79,354.33 is: 109,510.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,877.68 : 198,553.68 = 79,354.33 : x
  2. Step 2: Convert to fraction form
    143,877.68/198,553.68 = 79,354.33/x
  3. Step 3: Cross multiply
    143,877.68x = 198,553.68 × 79,354.33
  4. Step 4: Simplify right side
    143,877.68x = 15,756,093,749.05
  5. Step 5: Solve for x
    x = 15,756,093,749.05/143,877.68
  6. Step 6: Final answer
    x = 109,510.34

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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.