Home / 143,411.13-197,899.20-79,747.56

Finding the Fourth Proportional to 143,411.13, 197,899.20 and 79,747.56

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Solution

The fourth proportional to 143,411.13, 197,899.20 and 79,747.56 is: 110,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,411.13 : 197,899.20 = 79,747.56 : x
  2. Step 2: Convert to fraction form
    143,411.13/197,899.20 = 79,747.56/x
  3. Step 3: Cross multiply
    143,411.13x = 197,899.20 × 79,747.56
  4. Step 4: Simplify right side
    143,411.13x = 15,781,978,325.95
  5. Step 5: Solve for x
    x = 15,781,978,325.95/143,411.13
  6. Step 6: Final answer
    x = 110,047.10

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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.