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Finding the Fourth Proportional to 108,974.98, 150,385.60 and 61,228.30

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Solution

The fourth proportional to 108,974.98, 150,385.60 and 61,228.30 is: 84,495.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,974.98 : 150,385.60 = 61,228.30 : x
  2. Step 2: Convert to fraction form
    108,974.98/150,385.60 = 61,228.30/x
  3. Step 3: Cross multiply
    108,974.98x = 150,385.60 × 61,228.30
  4. Step 4: Simplify right side
    108,974.98x = 9,207,854,632.48
  5. Step 5: Solve for x
    x = 9,207,854,632.48/108,974.98
  6. Step 6: Final answer
    x = 84,495.13

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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.