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Finding the Fourth Proportional to 138,015.06, 207,060.30 and 49,277.58

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Solution

The fourth proportional to 138,015.06, 207,060.30 and 49,277.58 is: 73,929.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,015.06 : 207,060.30 = 49,277.58 : x
  2. Step 2: Convert to fraction form
    138,015.06/207,060.30 = 49,277.58/x
  3. Step 3: Cross multiply
    138,015.06x = 207,060.30 × 49,277.58
  4. Step 4: Simplify right side
    138,015.06x = 10,203,430,498.07
  5. Step 5: Solve for x
    x = 10,203,430,498.07/138,015.06
  6. Step 6: Final answer
    x = 73,929.83

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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.