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Finding the Fourth Proportional to 179,572.80, 269,143.20 and 74,337.60

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Solution

The fourth proportional to 179,572.80, 269,143.20 and 74,337.60 is: 111,416.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,572.80 : 269,143.20 = 74,337.60 : x
  2. Step 2: Convert to fraction form
    179,572.80/269,143.20 = 74,337.60/x
  3. Step 3: Cross multiply
    179,572.80x = 269,143.20 × 74,337.60
  4. Step 4: Simplify right side
    179,572.80x = 20,007,459,544.32
  5. Step 5: Solve for x
    x = 20,007,459,544.32/179,572.80
  6. Step 6: Final answer
    x = 111,416.98

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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.