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Finding the Fourth Proportional to 108,221.67, 162,368.95 and 68,194.17

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Solution

The fourth proportional to 108,221.67, 162,368.95 and 68,194.17 is: 102,314.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,221.67 : 162,368.95 = 68,194.17 : x
  2. Step 2: Convert to fraction form
    108,221.67/162,368.95 = 68,194.17/x
  3. Step 3: Cross multiply
    108,221.67x = 162,368.95 × 68,194.17
  4. Step 4: Simplify right side
    108,221.67x = 11,072,614,967.18
  5. Step 5: Solve for x
    x = 11,072,614,967.18/108,221.67
  6. Step 6: Final answer
    x = 102,314.22

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1.5x scale

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.