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Finding the Fourth Proportional to 128,103.44, 192,272.34 and 64,967.12

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Solution

The fourth proportional to 128,103.44, 192,272.34 and 64,967.12 is: 97,510.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,103.44 : 192,272.34 = 64,967.12 : x
  2. Step 2: Convert to fraction form
    128,103.44/192,272.34 = 64,967.12/x
  3. Step 3: Cross multiply
    128,103.44x = 192,272.34 × 64,967.12
  4. Step 4: Simplify right side
    128,103.44x = 12,491,380,185.46
  5. Step 5: Solve for x
    x = 12,491,380,185.46/128,103.44
  6. Step 6: Final answer
    x = 97,510.11

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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.