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Finding the Fourth Proportional to 192,231.50, 288,076.52 and 90,921.47

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Solution

The fourth proportional to 192,231.50, 288,076.52 and 90,921.47 is: 136,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,231.50 : 288,076.52 = 90,921.47 : x
  2. Step 2: Convert to fraction form
    192,231.50/288,076.52 = 90,921.47/x
  3. Step 3: Cross multiply
    192,231.50x = 288,076.52 × 90,921.47
  4. Step 4: Simplify right side
    192,231.50x = 26,192,339,457.81
  5. Step 5: Solve for x
    x = 26,192,339,457.81/192,231.50
  6. Step 6: Final answer
    x = 136,254.15

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1.5x scale

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.