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Finding the Fourth Proportional to 181,142.92, 249,972.36 and 108,586.80

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Solution

The fourth proportional to 181,142.92, 249,972.36 and 108,586.80 is: 149,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,142.92 : 249,972.36 = 108,586.80 : x
  2. Step 2: Convert to fraction form
    181,142.92/249,972.36 = 108,586.80/x
  3. Step 3: Cross multiply
    181,142.92x = 249,972.36 × 108,586.80
  4. Step 4: Simplify right side
    181,142.92x = 27,143,698,660.85
  5. Step 5: Solve for x
    x = 27,143,698,660.85/181,142.92
  6. Step 6: Final answer
    x = 149,846.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.