Home / 138,964.06-208,725.04-82,913.55

Finding the Fourth Proportional to 138,964.06, 208,725.04 and 82,913.55

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Solution

The fourth proportional to 138,964.06, 208,725.04 and 82,913.55 is: 124,536.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,964.06 : 208,725.04 = 82,913.55 : x
  2. Step 2: Convert to fraction form
    138,964.06/208,725.04 = 82,913.55/x
  3. Step 3: Cross multiply
    138,964.06x = 208,725.04 × 82,913.55
  4. Step 4: Simplify right side
    138,964.06x = 17,306,134,040.29
  5. Step 5: Solve for x
    x = 17,306,134,040.29/138,964.06
  6. Step 6: Final answer
    x = 124,536.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.