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Finding the Fourth Proportional to 109,292.78, 150,821.08 and 61,545.10

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Solution

The fourth proportional to 109,292.78, 150,821.08 and 61,545.10 is: 84,930.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,292.78 : 150,821.08 = 61,545.10 : x
  2. Step 2: Convert to fraction form
    109,292.78/150,821.08 = 61,545.10/x
  3. Step 3: Cross multiply
    109,292.78x = 150,821.08 × 61,545.10
  4. Step 4: Simplify right side
    109,292.78x = 9,282,298,450.71
  5. Step 5: Solve for x
    x = 9,282,298,450.71/109,292.78
  6. Step 6: Final answer
    x = 84,930.57

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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.