Home / 185,990.85-278,987.09-45,749.07

Finding the Fourth Proportional to 185,990.85, 278,987.09 and 45,749.07

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Solution

The fourth proportional to 185,990.85, 278,987.09 and 45,749.07 is: 68,623.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,990.85 : 278,987.09 = 45,749.07 : x
  2. Step 2: Convert to fraction form
    185,990.85/278,987.09 = 45,749.07/x
  3. Step 3: Cross multiply
    185,990.85x = 278,987.09 × 45,749.07
  4. Step 4: Simplify right side
    185,990.85x = 12,763,399,680.76
  5. Step 5: Solve for x
    x = 12,763,399,680.76/185,990.85
  6. Step 6: Final answer
    x = 68,623.80

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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.