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Finding the Fourth Proportional to 88,418.40, 132,541.20 and 79,087.20

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Solution

The fourth proportional to 88,418.40, 132,541.20 and 79,087.20 is: 118,553.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,418.40 : 132,541.20 = 79,087.20 : x
  2. Step 2: Convert to fraction form
    88,418.40/132,541.20 = 79,087.20/x
  3. Step 3: Cross multiply
    88,418.40x = 132,541.20 × 79,087.20
  4. Step 4: Simplify right side
    88,418.40x = 10,482,312,392.64
  5. Step 5: Solve for x
    x = 10,482,312,392.64/88,418.40
  6. Step 6: Final answer
    x = 118,553.52

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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.