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Finding the Fourth Proportional to 138,749.70, 208,124.55 and 50,006.10

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Solution

The fourth proportional to 138,749.70, 208,124.55 and 50,006.10 is: 75,009.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,749.70 : 208,124.55 = 50,006.10 : x
  2. Step 2: Convert to fraction form
    138,749.70/208,124.55 = 50,006.10/x
  3. Step 3: Cross multiply
    138,749.70x = 208,124.55 × 50,006.10
  4. Step 4: Simplify right side
    138,749.70x = 10,407,497,059.76
  5. Step 5: Solve for x
    x = 10,407,497,059.76/138,749.70
  6. Step 6: Final answer
    x = 75,009.15

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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.