Home / 109,474.40-151,076.13-66,441.53

Finding the Fourth Proportional to 109,474.40, 151,076.13 and 66,441.53

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Solution

The fourth proportional to 109,474.40, 151,076.13 and 66,441.53 is: 91,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,474.40 : 151,076.13 = 66,441.53 : x
  2. Step 2: Convert to fraction form
    109,474.40/151,076.13 = 66,441.53/x
  3. Step 3: Cross multiply
    109,474.40x = 151,076.13 × 66,441.53
  4. Step 4: Simplify right side
    109,474.40x = 10,037,729,223.68
  5. Step 5: Solve for x
    x = 10,037,729,223.68/109,474.40
  6. Step 6: Final answer
    x = 91,690.20

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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.