Home / 143,669.63-198,261.68-79,144.91

Finding the Fourth Proportional to 143,669.63, 198,261.68 and 79,144.91

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Solution

The fourth proportional to 143,669.63, 198,261.68 and 79,144.91 is: 109,218.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,669.63 : 198,261.68 = 79,144.91 : x
  2. Step 2: Convert to fraction form
    143,669.63/198,261.68 = 79,144.91/x
  3. Step 3: Cross multiply
    143,669.63x = 198,261.68 × 79,144.91
  4. Step 4: Simplify right side
    143,669.63x = 15,691,402,176.50
  5. Step 5: Solve for x
    x = 15,691,402,176.50/143,669.63
  6. Step 6: Final answer
    x = 109,218.64

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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.