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Finding the Fourth Proportional to 146,215.71, 201,778.29 and 79,147.71

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Solution

The fourth proportional to 146,215.71, 201,778.29 and 79,147.71 is: 109,224.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,215.71 : 201,778.29 = 79,147.71 : x
  2. Step 2: Convert to fraction form
    146,215.71/201,778.29 = 79,147.71/x
  3. Step 3: Cross multiply
    146,215.71x = 201,778.29 × 79,147.71
  4. Step 4: Simplify right side
    146,215.71x = 15,970,289,581.22
  5. Step 5: Solve for x
    x = 15,970,289,581.22/146,215.71
  6. Step 6: Final answer
    x = 109,224.17

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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.