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Finding the Fourth Proportional to 108,862.60, 150,220 and 61,105

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Solution

The fourth proportional to 108,862.60, 150,220 and 61,105 is: 84,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,862.60 : 150,220 = 61,105 : x
  2. Step 2: Convert to fraction form
    108,862.60/150,220 = 61,105/x
  3. Step 3: Cross multiply
    108,862.60x = 150,220 × 61,105
  4. Step 4: Simplify right side
    108,862.60x = 9,179,193,100
  5. Step 5: Solve for x
    x = 9,179,193,100/108,862.60
  6. Step 6: Final answer
    x = 84,319.07

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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.