Home / 88,158.20-132,237.30-86,408.60

Finding the Fourth Proportional to 88,158.20, 132,237.30 and 86,408.60

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Solution

The fourth proportional to 88,158.20, 132,237.30 and 86,408.60 is: 129,612.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,158.20 : 132,237.30 = 86,408.60 : x
  2. Step 2: Convert to fraction form
    88,158.20/132,237.30 = 86,408.60/x
  3. Step 3: Cross multiply
    88,158.20x = 132,237.30 × 86,408.60
  4. Step 4: Simplify right side
    88,158.20x = 11,426,439,960.78
  5. Step 5: Solve for x
    x = 11,426,439,960.78/88,158.20
  6. Step 6: Final answer
    x = 129,612.90

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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.