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Finding the Fourth Proportional to 128,103.84, 192,073.08 and 53,275.68

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Solution

The fourth proportional to 128,103.84, 192,073.08 and 53,275.68 is: 79,879.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,103.84 : 192,073.08 = 53,275.68 : x
  2. Step 2: Convert to fraction form
    128,103.84/192,073.08 = 53,275.68/x
  3. Step 3: Cross multiply
    128,103.84x = 192,073.08 × 53,275.68
  4. Step 4: Simplify right side
    128,103.84x = 10,232,823,946.69
  5. Step 5: Solve for x
    x = 10,232,823,946.69/128,103.84
  6. Step 6: Final answer
    x = 79,879.14

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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.