Home / 149,289.22-206,019.34-81,306.50

Finding the Fourth Proportional to 149,289.22, 206,019.34 and 81,306.50

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Solution

The fourth proportional to 149,289.22, 206,019.34 and 81,306.50 is: 112,203.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,289.22 : 206,019.34 = 81,306.50 : x
  2. Step 2: Convert to fraction form
    149,289.22/206,019.34 = 81,306.50/x
  3. Step 3: Cross multiply
    149,289.22x = 206,019.34 × 81,306.50
  4. Step 4: Simplify right side
    149,289.22x = 16,750,711,467.71
  5. Step 5: Solve for x
    x = 16,750,711,467.71/149,289.22
  6. Step 6: Final answer
    x = 112,203.09

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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.