Home / 149,448.20-206,235.70-81,465.80

Finding the Fourth Proportional to 149,448.20, 206,235.70 and 81,465.80

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Solution

The fourth proportional to 149,448.20, 206,235.70 and 81,465.80 is: 112,421.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,448.20 : 206,235.70 = 81,465.80 : x
  2. Step 2: Convert to fraction form
    149,448.20/206,235.70 = 81,465.80/x
  3. Step 3: Cross multiply
    149,448.20x = 206,235.70 × 81,465.80
  4. Step 4: Simplify right side
    149,448.20x = 16,801,156,289.06
  5. Step 5: Solve for x
    x = 16,801,156,289.06/149,448.20
  6. Step 6: Final answer
    x = 112,421.27

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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.