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Finding the Fourth Proportional to 108,610.40, 163,061.40 and 69,341.60

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Solution

The fourth proportional to 108,610.40, 163,061.40 and 69,341.60 is: 104,105.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,610.40 : 163,061.40 = 69,341.60 : x
  2. Step 2: Convert to fraction form
    108,610.40/163,061.40 = 69,341.60/x
  3. Step 3: Cross multiply
    108,610.40x = 163,061.40 × 69,341.60
  4. Step 4: Simplify right side
    108,610.40x = 11,306,938,374.24
  5. Step 5: Solve for x
    x = 11,306,938,374.24/108,610.40
  6. Step 6: Final answer
    x = 104,105.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.