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Finding the Fourth Proportional to 169,953.60, 255,003.30 and 86,847.60

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Solution

The fourth proportional to 169,953.60, 255,003.30 and 86,847.60 is: 130,308.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,953.60 : 255,003.30 = 86,847.60 : x
  2. Step 2: Convert to fraction form
    169,953.60/255,003.30 = 86,847.60/x
  3. Step 3: Cross multiply
    169,953.60x = 255,003.30 × 86,847.60
  4. Step 4: Simplify right side
    169,953.60x = 22,146,424,597.08
  5. Step 5: Solve for x
    x = 22,146,424,597.08/169,953.60
  6. Step 6: Final answer
    x = 130,308.65

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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.