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Finding the Fourth Proportional to 158,894.78, 219,276.60 and 87,276.48

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Solution

The fourth proportional to 158,894.78, 219,276.60 and 87,276.48 is: 120,442.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,894.78 : 219,276.60 = 87,276.48 : x
  2. Step 2: Convert to fraction form
    158,894.78/219,276.60 = 87,276.48/x
  3. Step 3: Cross multiply
    158,894.78x = 219,276.60 × 87,276.48
  4. Step 4: Simplify right side
    158,894.78x = 19,137,689,794.37
  5. Step 5: Solve for x
    x = 19,137,689,794.37/158,894.78
  6. Step 6: Final answer
    x = 120,442.53

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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.