Home / 108,857.90-163,188.43-38,720.81

Finding the Fourth Proportional to 108,857.90, 163,188.43 and 38,720.81

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Solution

The fourth proportional to 108,857.90, 163,188.43 and 38,720.81 is: 58,046.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,857.90 : 163,188.43 = 38,720.81 : x
  2. Step 2: Convert to fraction form
    108,857.90/163,188.43 = 38,720.81/x
  3. Step 3: Cross multiply
    108,857.90x = 163,188.43 × 38,720.81
  4. Step 4: Simplify right side
    108,857.90x = 6,318,788,192.23
  5. Step 5: Solve for x
    x = 6,318,788,192.23/108,857.90
  6. Step 6: Final answer
    x = 58,046.21

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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.