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Finding the Fourth Proportional to 108,971.92, 150,377.07 and 61,227.28

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Solution

The fourth proportional to 108,971.92, 150,377.07 and 61,227.28 is: 84,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,971.92 : 150,377.07 = 61,227.28 : x
  2. Step 2: Convert to fraction form
    108,971.92/150,377.07 = 61,227.28/x
  3. Step 3: Cross multiply
    108,971.92x = 150,377.07 × 61,227.28
  4. Step 4: Simplify right side
    108,971.92x = 9,207,178,970.47
  5. Step 5: Solve for x
    x = 9,207,178,970.47/108,971.92
  6. Step 6: Final answer
    x = 84,491.30

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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.