Home / 136,007.10-187,660.80-82,281.42

Finding the Fourth Proportional to 136,007.10, 187,660.80 and 82,281.42

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Solution

The fourth proportional to 136,007.10, 187,660.80 and 82,281.42 is: 113,530.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,007.10 : 187,660.80 = 82,281.42 : x
  2. Step 2: Convert to fraction form
    136,007.10/187,660.80 = 82,281.42/x
  3. Step 3: Cross multiply
    136,007.10x = 187,660.80 × 82,281.42
  4. Step 4: Simplify right side
    136,007.10x = 15,440,997,102.34
  5. Step 5: Solve for x
    x = 15,440,997,102.34/136,007.10
  6. Step 6: Final answer
    x = 113,530.82

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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.