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Finding the Fourth Proportional to 128,455.22, 192,522.36 and 61,882.94

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Solution

The fourth proportional to 128,455.22, 192,522.36 and 61,882.94 is: 92,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,455.22 : 192,522.36 = 61,882.94 : x
  2. Step 2: Convert to fraction form
    128,455.22/192,522.36 = 61,882.94/x
  3. Step 3: Cross multiply
    128,455.22x = 192,522.36 × 61,882.94
  4. Step 4: Simplify right side
    128,455.22x = 11,913,849,652.54
  5. Step 5: Solve for x
    x = 11,913,849,652.54/128,455.22
  6. Step 6: Final answer
    x = 92,747.10

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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.