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Finding the Fourth Proportional to 147,799.04, 203,978.94 and 84,126.56

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Solution

The fourth proportional to 147,799.04, 203,978.94 and 84,126.56 is: 116,103.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,799.04 : 203,978.94 = 84,126.56 : x
  2. Step 2: Convert to fraction form
    147,799.04/203,978.94 = 84,126.56/x
  3. Step 3: Cross multiply
    147,799.04x = 203,978.94 × 84,126.56
  4. Step 4: Simplify right side
    147,799.04x = 17,160,046,534.65
  5. Step 5: Solve for x
    x = 17,160,046,534.65/147,799.04
  6. Step 6: Final answer
    x = 116,103.91

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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.