Home / 120,831.85-181,247.78-118,499.05

Finding the Fourth Proportional to 120,831.85, 181,247.78 and 118,499.05

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Solution

The fourth proportional to 120,831.85, 181,247.78 and 118,499.05 is: 177,748.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,831.85 : 181,247.78 = 118,499.05 : x
  2. Step 2: Convert to fraction form
    120,831.85/181,247.78 = 118,499.05/x
  3. Step 3: Cross multiply
    120,831.85x = 181,247.78 × 118,499.05
  4. Step 4: Simplify right side
    120,831.85x = 21,477,689,152.11
  5. Step 5: Solve for x
    x = 21,477,689,152.11/120,831.85
  6. Step 6: Final answer
    x = 177,748.58

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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.