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Finding the Fourth Proportional to 154,081.80, 230,874.30 and 87,323.40

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Solution

The fourth proportional to 154,081.80, 230,874.30 and 87,323.40 is: 130,844.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,081.80 : 230,874.30 = 87,323.40 : x
  2. Step 2: Convert to fraction form
    154,081.80/230,874.30 = 87,323.40/x
  3. Step 3: Cross multiply
    154,081.80x = 230,874.30 × 87,323.40
  4. Step 4: Simplify right side
    154,081.80x = 20,160,728,848.62
  5. Step 5: Solve for x
    x = 20,160,728,848.62/154,081.80
  6. Step 6: Final answer
    x = 130,844.32

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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.