Home / 88,719.10-133,078.65-85,219.90

Finding the Fourth Proportional to 88,719.10, 133,078.65 and 85,219.90

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Solution

The fourth proportional to 88,719.10, 133,078.65 and 85,219.90 is: 127,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,719.10 : 133,078.65 = 85,219.90 : x
  2. Step 2: Convert to fraction form
    88,719.10/133,078.65 = 85,219.90/x
  3. Step 3: Cross multiply
    88,719.10x = 133,078.65 × 85,219.90
  4. Step 4: Simplify right side
    88,719.10x = 11,340,949,245.14
  5. Step 5: Solve for x
    x = 11,340,949,245.14/88,719.10
  6. Step 6: Final answer
    x = 127,829.85

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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.