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Finding the Fourth Proportional to 172,382.70, 258,574.05 and 113,285.10

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Solution

The fourth proportional to 172,382.70, 258,574.05 and 113,285.10 is: 169,927.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,382.70 : 258,574.05 = 113,285.10 : x
  2. Step 2: Convert to fraction form
    172,382.70/258,574.05 = 113,285.10/x
  3. Step 3: Cross multiply
    172,382.70x = 258,574.05 × 113,285.10
  4. Step 4: Simplify right side
    172,382.70x = 29,292,587,111.66
  5. Step 5: Solve for x
    x = 29,292,587,111.66/172,382.70
  6. Step 6: Final answer
    x = 169,927.65

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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.