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Finding the Fourth Proportional to 159,851.71, 239,469.81 and 99,903.61

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Solution

The fourth proportional to 159,851.71, 239,469.81 and 99,903.61 is: 149,663.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,851.71 : 239,469.81 = 99,903.61 : x
  2. Step 2: Convert to fraction form
    159,851.71/239,469.81 = 99,903.61/x
  3. Step 3: Cross multiply
    159,851.71x = 239,469.81 × 99,903.61
  4. Step 4: Simplify right side
    159,851.71x = 23,923,898,505.01
  5. Step 5: Solve for x
    x = 23,923,898,505.01/159,851.71
  6. Step 6: Final answer
    x = 149,663.08

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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.