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Finding the Fourth Proportional to 138,842.10, 208,273.95 and 39,010.41

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Solution

The fourth proportional to 138,842.10, 208,273.95 and 39,010.41 is: 58,518.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,842.10 : 208,273.95 = 39,010.41 : x
  2. Step 2: Convert to fraction form
    138,842.10/208,273.95 = 39,010.41/x
  3. Step 3: Cross multiply
    138,842.10x = 208,273.95 × 39,010.41
  4. Step 4: Simplify right side
    138,842.10x = 8,124,852,181.82
  5. Step 5: Solve for x
    x = 8,124,852,181.82/138,842.10
  6. Step 6: Final answer
    x = 58,518.65

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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.