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Finding the Fourth Proportional to 108,543.78, 149,793.12 and 60,795.90

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Solution

The fourth proportional to 108,543.78, 149,793.12 and 60,795.90 is: 83,899.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,543.78 : 149,793.12 = 60,795.90 : x
  2. Step 2: Convert to fraction form
    108,543.78/149,793.12 = 60,795.90/x
  3. Step 3: Cross multiply
    108,543.78x = 149,793.12 × 60,795.90
  4. Step 4: Simplify right side
    108,543.78x = 9,106,807,544.21
  5. Step 5: Solve for x
    x = 9,106,807,544.21/108,543.78
  6. Step 6: Final answer
    x = 83,899.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.