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Finding the Fourth Proportional to 109,174.96, 150,659.70 and 61,428.28

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Solution

The fourth proportional to 109,174.96, 150,659.70 and 61,428.28 is: 84,770.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,174.96 : 150,659.70 = 61,428.28 : x
  2. Step 2: Convert to fraction form
    109,174.96/150,659.70 = 61,428.28/x
  3. Step 3: Cross multiply
    109,174.96x = 150,659.70 × 61,428.28
  4. Step 4: Simplify right side
    109,174.96x = 9,254,766,236.32
  5. Step 5: Solve for x
    x = 9,254,766,236.32/109,174.96
  6. Step 6: Final answer
    x = 84,770.04

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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.