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Finding the Fourth Proportional to 109,761.09, 151,473.15 and 61,361.64

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Solution

The fourth proportional to 109,761.09, 151,473.15 and 61,361.64 is: 84,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,761.09 : 151,473.15 = 61,361.64 : x
  2. Step 2: Convert to fraction form
    109,761.09/151,473.15 = 61,361.64/x
  3. Step 3: Cross multiply
    109,761.09x = 151,473.15 × 61,361.64
  4. Step 4: Simplify right side
    109,761.09x = 9,294,640,899.97
  5. Step 5: Solve for x
    x = 9,294,640,899.97/109,761.09
  6. Step 6: Final answer
    x = 84,680.65

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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.