Home / 143,126.11-197,504.90-79,463.89

Finding the Fourth Proportional to 143,126.11, 197,504.90 and 79,463.89

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Solution

The fourth proportional to 143,126.11, 197,504.90 and 79,463.89 is: 109,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,126.11 : 197,504.90 = 79,463.89 : x
  2. Step 2: Convert to fraction form
    143,126.11/197,504.90 = 79,463.89/x
  3. Step 3: Cross multiply
    143,126.11x = 197,504.90 × 79,463.89
  4. Step 4: Simplify right side
    143,126.11x = 15,694,507,250.74
  5. Step 5: Solve for x
    x = 15,694,507,250.74/143,126.11
  6. Step 6: Final answer
    x = 109,655.10

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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.