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Finding the Fourth Proportional to 136,165.60, 203,762.40 and 86,269.60

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Solution

The fourth proportional to 136,165.60, 203,762.40 and 86,269.60 is: 129,096.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,165.60 : 203,762.40 = 86,269.60 : x
  2. Step 2: Convert to fraction form
    136,165.60/203,762.40 = 86,269.60/x
  3. Step 3: Cross multiply
    136,165.60x = 203,762.40 × 86,269.60
  4. Step 4: Simplify right side
    136,165.60x = 17,578,500,743.04
  5. Step 5: Solve for x
    x = 17,578,500,743.04/136,165.60
  6. Step 6: Final answer
    x = 129,096.49

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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.