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Finding the Fourth Proportional to 128,314.96, 192,472.54 and 34,820.71

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Solution

The fourth proportional to 128,314.96, 192,472.54 and 34,820.71 is: 52,231.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,314.96 : 192,472.54 = 34,820.71 : x
  2. Step 2: Convert to fraction form
    128,314.96/192,472.54 = 34,820.71/x
  3. Step 3: Cross multiply
    128,314.96x = 192,472.54 × 34,820.71
  4. Step 4: Simplify right side
    128,314.96x = 6,702,029,930.07
  5. Step 5: Solve for x
    x = 6,702,029,930.07/128,314.96
  6. Step 6: Final answer
    x = 52,231.09

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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.