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Finding the Fourth Proportional to 172,860.70, 238,557 and 101,246.17

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Solution

The fourth proportional to 172,860.70, 238,557 and 101,246.17 is: 139,725.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,860.70 : 238,557 = 101,246.17 : x
  2. Step 2: Convert to fraction form
    172,860.70/238,557 = 101,246.17/x
  3. Step 3: Cross multiply
    172,860.70x = 238,557 × 101,246.17
  4. Step 4: Simplify right side
    172,860.70x = 24,152,982,576.69
  5. Step 5: Solve for x
    x = 24,152,982,576.69/172,860.70
  6. Step 6: Final answer
    x = 139,725.12

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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.