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Finding the Fourth Proportional to 128,454.84, 192,682.32 and 65,265.12

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Solution

The fourth proportional to 128,454.84, 192,682.32 and 65,265.12 is: 97,897.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,454.84 : 192,682.32 = 65,265.12 : x
  2. Step 2: Convert to fraction form
    128,454.84/192,682.32 = 65,265.12/x
  3. Step 3: Cross multiply
    128,454.84x = 192,682.32 × 65,265.12
  4. Step 4: Simplify right side
    128,454.84x = 12,575,434,736.68
  5. Step 5: Solve for x
    x = 12,575,434,736.68/128,454.84
  6. Step 6: Final answer
    x = 97,897.71

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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.