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Finding the Fourth Proportional to 128,321.50, 192,479.01 and 34,824.82

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Solution

The fourth proportional to 128,321.50, 192,479.01 and 34,824.82 is: 52,236.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,321.50 : 192,479.01 = 34,824.82 : x
  2. Step 2: Convert to fraction form
    128,321.50/192,479.01 = 34,824.82/x
  3. Step 3: Cross multiply
    128,321.50x = 192,479.01 × 34,824.82
  4. Step 4: Simplify right side
    128,321.50x = 6,703,046,877.03
  5. Step 5: Solve for x
    x = 6,703,046,877.03/128,321.50
  6. Step 6: Final answer
    x = 52,236.35

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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.