Home / 111,999.40-168,024-40,921.90

Finding the Fourth Proportional to 111,999.40, 168,024 and 40,921.90

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Solution

The fourth proportional to 111,999.40, 168,024 and 40,921.90 is: 61,391.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,999.40 : 168,024 = 40,921.90 : x
  2. Step 2: Convert to fraction form
    111,999.40/168,024 = 40,921.90/x
  3. Step 3: Cross multiply
    111,999.40x = 168,024 × 40,921.90
  4. Step 4: Simplify right side
    111,999.40x = 6,875,861,325.60
  5. Step 5: Solve for x
    x = 6,875,861,325.60/111,999.40
  6. Step 6: Final answer
    x = 61,391.95

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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.