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Finding the Fourth Proportional to 158,659.44, 218,949.20 and 87,037.68

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Solution

The fourth proportional to 158,659.44, 218,949.20 and 87,037.68 is: 120,111.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,659.44 : 218,949.20 = 87,037.68 : x
  2. Step 2: Convert to fraction form
    158,659.44/218,949.20 = 87,037.68/x
  3. Step 3: Cross multiply
    158,659.44x = 218,949.20 × 87,037.68
  4. Step 4: Simplify right side
    158,659.44x = 19,056,830,405.86
  5. Step 5: Solve for x
    x = 19,056,830,405.86/158,659.44
  6. Step 6: Final answer
    x = 120,111.54

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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.