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Finding the Fourth Proportional to 179,429.60, 269,047.20 and 74,129.60

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Solution

The fourth proportional to 179,429.60, 269,047.20 and 74,129.60 is: 111,154.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,429.60 : 269,047.20 = 74,129.60 : x
  2. Step 2: Convert to fraction form
    179,429.60/269,047.20 = 74,129.60/x
  3. Step 3: Cross multiply
    179,429.60x = 269,047.20 × 74,129.60
  4. Step 4: Simplify right side
    179,429.60x = 19,944,361,317.12
  5. Step 5: Solve for x
    x = 19,944,361,317.12/179,429.60
  6. Step 6: Final answer
    x = 111,154.24

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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.