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Finding the Fourth Proportional to 146,745.70, 220,118.55 and 136,831.30

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Solution

The fourth proportional to 146,745.70, 220,118.55 and 136,831.30 is: 205,246.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,745.70 : 220,118.55 = 136,831.30 : x
  2. Step 2: Convert to fraction form
    146,745.70/220,118.55 = 136,831.30/x
  3. Step 3: Cross multiply
    146,745.70x = 220,118.55 × 136,831.30
  4. Step 4: Simplify right side
    146,745.70x = 30,119,107,350.62
  5. Step 5: Solve for x
    x = 30,119,107,350.62/146,745.70
  6. Step 6: Final answer
    x = 205,246.95

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1.5x scale

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.