Home / 149,100.60-205,760.46-81,117.96

Finding the Fourth Proportional to 149,100.60, 205,760.46 and 81,117.96

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Solution

The fourth proportional to 149,100.60, 205,760.46 and 81,117.96 is: 111,943.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,100.60 : 205,760.46 = 81,117.96 : x
  2. Step 2: Convert to fraction form
    149,100.60/205,760.46 = 81,117.96/x
  3. Step 3: Cross multiply
    149,100.60x = 205,760.46 × 81,117.96
  4. Step 4: Simplify right side
    149,100.60x = 16,690,868,763.86
  5. Step 5: Solve for x
    x = 16,690,868,763.86/149,100.60
  6. Step 6: Final answer
    x = 111,943.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.