Home / 197,694.90-272,808.18-117,129.87

Finding the Fourth Proportional to 197,694.90, 272,808.18 and 117,129.87

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Solution

The fourth proportional to 197,694.90, 272,808.18 and 117,129.87 is: 161,632.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,694.90 : 272,808.18 = 117,129.87 : x
  2. Step 2: Convert to fraction form
    197,694.90/272,808.18 = 117,129.87/x
  3. Step 3: Cross multiply
    197,694.90x = 272,808.18 × 117,129.87
  4. Step 4: Simplify right side
    197,694.90x = 31,953,986,658.34
  5. Step 5: Solve for x
    x = 31,953,986,658.34/197,694.90
  6. Step 6: Final answer
    x = 161,632.83

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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.