Home / 172,681.18-258,956.16-82,631.46

Finding the Fourth Proportional to 172,681.18, 258,956.16 and 82,631.46

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Solution

The fourth proportional to 172,681.18, 258,956.16 and 82,631.46 is: 123,915.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,681.18 : 258,956.16 = 82,631.46 : x
  2. Step 2: Convert to fraction form
    172,681.18/258,956.16 = 82,631.46/x
  3. Step 3: Cross multiply
    172,681.18x = 258,956.16 × 82,631.46
  4. Step 4: Simplify right side
    172,681.18x = 21,397,925,576.79
  5. Step 5: Solve for x
    x = 21,397,925,576.79/172,681.18
  6. Step 6: Final answer
    x = 123,915.79

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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.