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Finding the Fourth Proportional to 147,659.60, 203,699.40 and 107,310.80

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Solution

The fourth proportional to 147,659.60, 203,699.40 and 107,310.80 is: 148,037.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,659.60 : 203,699.40 = 107,310.80 : x
  2. Step 2: Convert to fraction form
    147,659.60/203,699.40 = 107,310.80/x
  3. Step 3: Cross multiply
    147,659.60x = 203,699.40 × 107,310.80
  4. Step 4: Simplify right side
    147,659.60x = 21,859,145,573.52
  5. Step 5: Solve for x
    x = 21,859,145,573.52/147,659.60
  6. Step 6: Final answer
    x = 148,037.42

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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.