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Finding the Fourth Proportional to 179,809.60, 269,617.20 and 74,639.20

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Solution

The fourth proportional to 179,809.60, 269,617.20 and 74,639.20 is: 111,918.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,809.60 : 269,617.20 = 74,639.20 : x
  2. Step 2: Convert to fraction form
    179,809.60/269,617.20 = 74,639.20/x
  3. Step 3: Cross multiply
    179,809.60x = 269,617.20 × 74,639.20
  4. Step 4: Simplify right side
    179,809.60x = 20,124,012,114.24
  5. Step 5: Solve for x
    x = 20,124,012,114.24/179,809.60
  6. Step 6: Final answer
    x = 111,918.45

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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.