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Finding the Fourth Proportional to 109,484.19, 151,062.32 and 61,728.30

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Solution

The fourth proportional to 109,484.19, 151,062.32 and 61,728.30 is: 85,170.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,484.19 : 151,062.32 = 61,728.30 : x
  2. Step 2: Convert to fraction form
    109,484.19/151,062.32 = 61,728.30/x
  3. Step 3: Cross multiply
    109,484.19x = 151,062.32 × 61,728.30
  4. Step 4: Simplify right side
    109,484.19x = 9,324,820,361.98
  5. Step 5: Solve for x
    x = 9,324,820,361.98/109,484.19
  6. Step 6: Final answer
    x = 85,170.47

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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.