Home / 120,303.11-180,353.18-75,831.83

Finding the Fourth Proportional to 120,303.11, 180,353.18 and 75,831.83

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Solution

The fourth proportional to 120,303.11, 180,353.18 and 75,831.83 is: 113,683.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,303.11 : 180,353.18 = 75,831.83 : x
  2. Step 2: Convert to fraction form
    120,303.11/180,353.18 = 75,831.83/x
  3. Step 3: Cross multiply
    120,303.11x = 180,353.18 × 75,831.83
  4. Step 4: Simplify right side
    120,303.11x = 13,676,511,930.85
  5. Step 5: Solve for x
    x = 13,676,511,930.85/120,303.11
  6. Step 6: Final answer
    x = 113,683.78

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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.