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Finding the Fourth Proportional to 128,168.66, 192,257.61 and 48,199.30

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Solution

The fourth proportional to 128,168.66, 192,257.61 and 48,199.30 is: 72,300.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,168.66 : 192,257.61 = 48,199.30 : x
  2. Step 2: Convert to fraction form
    128,168.66/192,257.61 = 48,199.30/x
  3. Step 3: Cross multiply
    128,168.66x = 192,257.61 × 48,199.30
  4. Step 4: Simplify right side
    128,168.66x = 9,266,681,019.39
  5. Step 5: Solve for x
    x = 9,266,681,019.39/128,168.66
  6. Step 6: Final answer
    x = 72,300.68

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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.