Home / 143,657.43-198,247.55-79,997.51

Finding the Fourth Proportional to 143,657.43, 198,247.55 and 79,997.51

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Solution

The fourth proportional to 143,657.43, 198,247.55 and 79,997.51 is: 110,396.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,657.43 : 198,247.55 = 79,997.51 : x
  2. Step 2: Convert to fraction form
    143,657.43/198,247.55 = 79,997.51/x
  3. Step 3: Cross multiply
    143,657.43x = 198,247.55 × 79,997.51
  4. Step 4: Simplify right side
    143,657.43x = 15,859,308,972.38
  5. Step 5: Solve for x
    x = 15,859,308,972.38/143,657.43
  6. Step 6: Final answer
    x = 110,396.72

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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.