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Finding the Fourth Proportional to 171,151.72, 256,632.74 and 70,020.78

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Solution

The fourth proportional to 171,151.72, 256,632.74 and 70,020.78 is: 104,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,151.72 : 256,632.74 = 70,020.78 : x
  2. Step 2: Convert to fraction form
    171,151.72/256,632.74 = 70,020.78/x
  3. Step 3: Cross multiply
    171,151.72x = 256,632.74 × 70,020.78
  4. Step 4: Simplify right side
    171,151.72x = 17,969,624,628.34
  5. Step 5: Solve for x
    x = 17,969,624,628.34/171,151.72
  6. Step 6: Final answer
    x = 104,992.37

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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.