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Finding the Fourth Proportional to 88,138.66, 132,179.94 and 28,960.66

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Solution

The fourth proportional to 88,138.66, 132,179.94 and 28,960.66 is: 43,431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,138.66 : 132,179.94 = 28,960.66 : x
  2. Step 2: Convert to fraction form
    88,138.66/132,179.94 = 28,960.66/x
  3. Step 3: Cross multiply
    88,138.66x = 132,179.94 × 28,960.66
  4. Step 4: Simplify right side
    88,138.66x = 3,828,018,301.16
  5. Step 5: Solve for x
    x = 3,828,018,301.16/88,138.66
  6. Step 6: Final answer
    x = 43,431.77

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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.