Home / 124,109.20-186,212.40-45,231.40

Finding the Fourth Proportional to 124,109.20, 186,212.40 and 45,231.40

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Solution

The fourth proportional to 124,109.20, 186,212.40 and 45,231.40 is: 67,864.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,109.20 : 186,212.40 = 45,231.40 : x
  2. Step 2: Convert to fraction form
    124,109.20/186,212.40 = 45,231.40/x
  3. Step 3: Cross multiply
    124,109.20x = 186,212.40 × 45,231.40
  4. Step 4: Simplify right side
    124,109.20x = 8,422,647,549.36
  5. Step 5: Solve for x
    x = 8,422,647,549.36/124,109.20
  6. Step 6: Final answer
    x = 67,864.81

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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.