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Finding the Fourth Proportional to 143,987.82, 198,700.83 and 80,332.62

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Solution

The fourth proportional to 143,987.82, 198,700.83 and 80,332.62 is: 110,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,987.82 : 198,700.83 = 80,332.62 : x
  2. Step 2: Convert to fraction form
    143,987.82/198,700.83 = 80,332.62/x
  3. Step 3: Cross multiply
    143,987.82x = 198,700.83 × 80,332.62
  4. Step 4: Simplify right side
    143,987.82x = 15,962,158,270.07
  5. Step 5: Solve for x
    x = 15,962,158,270.07/143,987.82
  6. Step 6: Final answer
    x = 110,857.70

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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.