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Finding the Fourth Proportional to 154,937.60, 213,801.60 and 87,856.64

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Solution

The fourth proportional to 154,937.60, 213,801.60 and 87,856.64 is: 121,235.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,937.60 : 213,801.60 = 87,856.64 : x
  2. Step 2: Convert to fraction form
    154,937.60/213,801.60 = 87,856.64/x
  3. Step 3: Cross multiply
    154,937.60x = 213,801.60 × 87,856.64
  4. Step 4: Simplify right side
    154,937.60x = 18,783,890,202.62
  5. Step 5: Solve for x
    x = 18,783,890,202.62/154,937.60
  6. Step 6: Final answer
    x = 121,235.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.