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Finding the Fourth Proportional to 108,840, 163,196.55 and 42,202.29

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Solution

The fourth proportional to 108,840, 163,196.55 and 42,202.29 is: 63,278.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,840 : 163,196.55 = 42,202.29 : x
  2. Step 2: Convert to fraction form
    108,840/163,196.55 = 42,202.29/x
  3. Step 3: Cross multiply
    108,840x = 163,196.55 × 42,202.29
  4. Step 4: Simplify right side
    108,840x = 6,887,268,130.10
  5. Step 5: Solve for x
    x = 6,887,268,130.10/108,840
  6. Step 6: Final answer
    x = 63,278.83

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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.