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Finding the Fourth Proportional to 138,924.37, 208,362.41 and 39,060.87

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Solution

The fourth proportional to 138,924.37, 208,362.41 and 39,060.87 is: 58,584.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,924.37 : 208,362.41 = 39,060.87 : x
  2. Step 2: Convert to fraction form
    138,924.37/208,362.41 = 39,060.87/x
  3. Step 3: Cross multiply
    138,924.37x = 208,362.41 × 39,060.87
  4. Step 4: Simplify right side
    138,924.37x = 8,138,817,009.90
  5. Step 5: Solve for x
    x = 8,138,817,009.90/138,924.37
  6. Step 6: Final answer
    x = 58,584.52

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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.