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Finding the Fourth Proportional to 147,991.80, 222,003.90 and 143,326.20

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Solution

The fourth proportional to 147,991.80, 222,003.90 and 143,326.20 is: 215,004.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,991.80 : 222,003.90 = 143,326.20 : x
  2. Step 2: Convert to fraction form
    147,991.80/222,003.90 = 143,326.20/x
  3. Step 3: Cross multiply
    147,991.80x = 222,003.90 × 143,326.20
  4. Step 4: Simplify right side
    147,991.80x = 31,818,975,372.18
  5. Step 5: Solve for x
    x = 31,818,975,372.18/147,991.80
  6. Step 6: Final answer
    x = 215,004.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.