Home / 143,186.11-197,599.27-78,658.06

Finding the Fourth Proportional to 143,186.11, 197,599.27 and 78,658.06

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Solution

The fourth proportional to 143,186.11, 197,599.27 and 78,658.06 is: 108,549.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,186.11 : 197,599.27 = 78,658.06 : x
  2. Step 2: Convert to fraction form
    143,186.11/197,599.27 = 78,658.06/x
  3. Step 3: Cross multiply
    143,186.11x = 197,599.27 × 78,658.06
  4. Step 4: Simplify right side
    143,186.11x = 15,542,775,235.62
  5. Step 5: Solve for x
    x = 15,542,775,235.62/143,186.11
  6. Step 6: Final answer
    x = 108,549.46

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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.