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Finding the Fourth Proportional to 108,715.89, 163,129.50 and 49,543.95

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Solution

The fourth proportional to 108,715.89, 163,129.50 and 49,543.95 is: 74,341.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,715.89 : 163,129.50 = 49,543.95 : x
  2. Step 2: Convert to fraction form
    108,715.89/163,129.50 = 49,543.95/x
  3. Step 3: Cross multiply
    108,715.89x = 163,129.50 × 49,543.95
  4. Step 4: Simplify right side
    108,715.89x = 8,082,079,791.53
  5. Step 5: Solve for x
    x = 8,082,079,791.53/108,715.89
  6. Step 6: Final answer
    x = 74,341.29

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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.