Home / 143,865.86-198,530.33-79,337.82

Finding the Fourth Proportional to 143,865.86, 198,530.33 and 79,337.82

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Solution

The fourth proportional to 143,865.86, 198,530.33 and 79,337.82 is: 109,483.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,865.86 : 198,530.33 = 79,337.82 : x
  2. Step 2: Convert to fraction form
    143,865.86/198,530.33 = 79,337.82/x
  3. Step 3: Cross multiply
    143,865.86x = 198,530.33 × 79,337.82
  4. Step 4: Simplify right side
    143,865.86x = 15,750,963,189.39
  5. Step 5: Solve for x
    x = 15,750,963,189.39/143,865.86
  6. Step 6: Final answer
    x = 109,483.68

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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.