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Finding the Fourth Proportional to 192,862.92, 266,149.08 and 107,981.40

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Solution

The fourth proportional to 192,862.92, 266,149.08 and 107,981.40 is: 149,013.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,862.92 : 266,149.08 = 107,981.40 : x
  2. Step 2: Convert to fraction form
    192,862.92/266,149.08 = 107,981.40/x
  3. Step 3: Cross multiply
    192,862.92x = 266,149.08 × 107,981.40
  4. Step 4: Simplify right side
    192,862.92x = 28,739,150,267.11
  5. Step 5: Solve for x
    x = 28,739,150,267.11/192,862.92
  6. Step 6: Final answer
    x = 149,013.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.