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Finding the Fourth Proportional to 128,483.28, 192,718.98 and 33,711.12

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Solution

The fourth proportional to 128,483.28, 192,718.98 and 33,711.12 is: 50,565.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,483.28 : 192,718.98 = 33,711.12 : x
  2. Step 2: Convert to fraction form
    128,483.28/192,718.98 = 33,711.12/x
  3. Step 3: Cross multiply
    128,483.28x = 192,718.98 × 33,711.12
  4. Step 4: Simplify right side
    128,483.28x = 6,496,772,661.06
  5. Step 5: Solve for x
    x = 6,496,772,661.06/128,483.28
  6. Step 6: Final answer
    x = 50,565.12

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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.