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Finding the Fourth Proportional to 128,151.70, 192,227.55 and 92,722.30

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Solution

The fourth proportional to 128,151.70, 192,227.55 and 92,722.30 is: 139,083.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.70 : 192,227.55 = 92,722.30 : x
  2. Step 2: Convert to fraction form
    128,151.70/192,227.55 = 92,722.30/x
  3. Step 3: Cross multiply
    128,151.70x = 192,227.55 × 92,722.30
  4. Step 4: Simplify right side
    128,151.70x = 17,823,780,559.37
  5. Step 5: Solve for x
    x = 17,823,780,559.37/128,151.70
  6. Step 6: Final answer
    x = 139,083.45

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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.