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Finding the Fourth Proportional to 169,945.60, 254,991.30 and 86,839.60

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Solution

The fourth proportional to 169,945.60, 254,991.30 and 86,839.60 is: 130,296.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,945.60 : 254,991.30 = 86,839.60 : x
  2. Step 2: Convert to fraction form
    169,945.60/254,991.30 = 86,839.60/x
  3. Step 3: Cross multiply
    169,945.60x = 254,991.30 × 86,839.60
  4. Step 4: Simplify right side
    169,945.60x = 22,143,342,495.48
  5. Step 5: Solve for x
    x = 22,143,342,495.48/169,945.60
  6. Step 6: Final answer
    x = 130,296.65

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1.5x scale

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.