Home / 187,470.31-258,709.05-102,587.38

Finding the Fourth Proportional to 187,470.31, 258,709.05 and 102,587.38

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Solution

The fourth proportional to 187,470.31, 258,709.05 and 102,587.38 is: 141,570.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,470.31 : 258,709.05 = 102,587.38 : x
  2. Step 2: Convert to fraction form
    187,470.31/258,709.05 = 102,587.38/x
  3. Step 3: Cross multiply
    187,470.31x = 258,709.05 × 102,587.38
  4. Step 4: Simplify right side
    187,470.31x = 26,540,281,815.31
  5. Step 5: Solve for x
    x = 26,540,281,815.31/187,470.31
  6. Step 6: Final answer
    x = 141,570.59

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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.