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Finding the Fourth Proportional to 109,562.75, 151,196.75 and 61,820.54

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Solution

The fourth proportional to 109,562.75, 151,196.75 and 61,820.54 is: 85,312.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,562.75 : 151,196.75 = 61,820.54 : x
  2. Step 2: Convert to fraction form
    109,562.75/151,196.75 = 61,820.54/x
  3. Step 3: Cross multiply
    109,562.75x = 151,196.75 × 61,820.54
  4. Step 4: Simplify right side
    109,562.75x = 9,347,064,464.97
  5. Step 5: Solve for x
    x = 9,347,064,464.97/109,562.75
  6. Step 6: Final answer
    x = 85,312.43

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1.5x scale

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.