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Finding the Fourth Proportional to 128,098.94, 192,158.12 and 34,603.88

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Solution

The fourth proportional to 128,098.94, 192,158.12 and 34,603.88 is: 51,908.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,098.94 : 192,158.12 = 34,603.88 : x
  2. Step 2: Convert to fraction form
    128,098.94/192,158.12 = 34,603.88/x
  3. Step 3: Cross multiply
    128,098.94x = 192,158.12 × 34,603.88
  4. Step 4: Simplify right side
    128,098.94x = 6,649,415,651.22
  5. Step 5: Solve for x
    x = 6,649,415,651.22/128,098.94
  6. Step 6: Final answer
    x = 51,908.44

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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.