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Finding the Fourth Proportional to 138,361, 207,541.62 and 49,620.04

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Solution

The fourth proportional to 138,361, 207,541.62 and 49,620.04 is: 74,430.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,361 : 207,541.62 = 49,620.04 : x
  2. Step 2: Convert to fraction form
    138,361/207,541.62 = 49,620.04/x
  3. Step 3: Cross multiply
    138,361x = 207,541.62 × 49,620.04
  4. Step 4: Simplify right side
    138,361x = 10,298,223,486.06
  5. Step 5: Solve for x
    x = 10,298,223,486.06/138,361
  6. Step 6: Final answer
    x = 74,430.10

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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.