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Finding the Fourth Proportional to 147,174.68, 203,105.40 and 104,231

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Solution

The fourth proportional to 147,174.68, 203,105.40 and 104,231 is: 143,841.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,174.68 : 203,105.40 = 104,231 : x
  2. Step 2: Convert to fraction form
    147,174.68/203,105.40 = 104,231/x
  3. Step 3: Cross multiply
    147,174.68x = 203,105.40 × 104,231
  4. Step 4: Simplify right side
    147,174.68x = 21,169,878,947.40
  5. Step 5: Solve for x
    x = 21,169,878,947.40/147,174.68
  6. Step 6: Final answer
    x = 143,841.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.