Home / 231,105.20-346,690.20-90,831.20

Finding the Fourth Proportional to 231,105.20, 346,690.20 and 90,831.20

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Solution

The fourth proportional to 231,105.20, 346,690.20 and 90,831.20 is: 136,259.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,105.20 : 346,690.20 = 90,831.20 : x
  2. Step 2: Convert to fraction form
    231,105.20/346,690.20 = 90,831.20/x
  3. Step 3: Cross multiply
    231,105.20x = 346,690.20 × 90,831.20
  4. Step 4: Simplify right side
    231,105.20x = 31,490,286,894.24
  5. Step 5: Solve for x
    x = 31,490,286,894.24/231,105.20
  6. Step 6: Final answer
    x = 136,259.53

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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.