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Finding the Fourth Proportional to 179,416.80, 269,060.40 and 90,640.80

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Solution

The fourth proportional to 179,416.80, 269,060.40 and 90,640.80 is: 135,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,416.80 : 269,060.40 = 90,640.80 : x
  2. Step 2: Convert to fraction form
    179,416.80/269,060.40 = 90,640.80/x
  3. Step 3: Cross multiply
    179,416.80x = 269,060.40 × 90,640.80
  4. Step 4: Simplify right side
    179,416.80x = 24,387,849,904.32
  5. Step 5: Solve for x
    x = 24,387,849,904.32/179,416.80
  6. Step 6: Final answer
    x = 135,928.46

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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.