Home / 140,121.18-193,417.08-82,760.72

Finding the Fourth Proportional to 140,121.18, 193,417.08 and 82,760.72

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Solution

The fourth proportional to 140,121.18, 193,417.08 and 82,760.72 is: 114,239.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,121.18 : 193,417.08 = 82,760.72 : x
  2. Step 2: Convert to fraction form
    140,121.18/193,417.08 = 82,760.72/x
  3. Step 3: Cross multiply
    140,121.18x = 193,417.08 × 82,760.72
  4. Step 4: Simplify right side
    140,121.18x = 16,007,336,801.10
  5. Step 5: Solve for x
    x = 16,007,336,801.10/140,121.18
  6. Step 6: Final answer
    x = 114,239.24

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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.