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Finding the Fourth Proportional to 170,172.78, 255,239.82 and 45,523.50

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Solution

The fourth proportional to 170,172.78, 255,239.82 and 45,523.50 is: 68,280.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,172.78 : 255,239.82 = 45,523.50 : x
  2. Step 2: Convert to fraction form
    170,172.78/255,239.82 = 45,523.50/x
  3. Step 3: Cross multiply
    170,172.78x = 255,239.82 × 45,523.50
  4. Step 4: Simplify right side
    170,172.78x = 11,619,409,945.77
  5. Step 5: Solve for x
    x = 11,619,409,945.77/170,172.78
  6. Step 6: Final answer
    x = 68,280.07

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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.