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Finding the Fourth Proportional to 128,164.05, 192,266.06 and 61,591.77

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Solution

The fourth proportional to 128,164.05, 192,266.06 and 61,591.77 is: 92,397.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,164.05 : 192,266.06 = 61,591.77 : x
  2. Step 2: Convert to fraction form
    128,164.05/192,266.06 = 61,591.77/x
  3. Step 3: Cross multiply
    128,164.05x = 192,266.06 × 61,591.77
  4. Step 4: Simplify right side
    128,164.05x = 11,842,006,638.37
  5. Step 5: Solve for x
    x = 11,842,006,638.37/128,164.05
  6. Step 6: Final answer
    x = 92,397.26

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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.