Home / 149,919.40-224,879.10-90,724.60

Finding the Fourth Proportional to 149,919.40, 224,879.10 and 90,724.60

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Solution

The fourth proportional to 149,919.40, 224,879.10 and 90,724.60 is: 136,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,919.40 : 224,879.10 = 90,724.60 : x
  2. Step 2: Convert to fraction form
    149,919.40/224,879.10 = 90,724.60/x
  3. Step 3: Cross multiply
    149,919.40x = 224,879.10 × 90,724.60
  4. Step 4: Simplify right side
    149,919.40x = 20,402,066,395.86
  5. Step 5: Solve for x
    x = 20,402,066,395.86/149,919.40
  6. Step 6: Final answer
    x = 136,086.90

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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.