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Finding the Fourth Proportional to 111,787.48, 154,299.54 and 66,497.32

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Solution

The fourth proportional to 111,787.48, 154,299.54 and 66,497.32 is: 91,785.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,787.48 : 154,299.54 = 66,497.32 : x
  2. Step 2: Convert to fraction form
    111,787.48/154,299.54 = 66,497.32/x
  3. Step 3: Cross multiply
    111,787.48x = 154,299.54 × 66,497.32
  4. Step 4: Simplify right side
    111,787.48x = 10,260,505,887.23
  5. Step 5: Solve for x
    x = 10,260,505,887.23/111,787.48
  6. Step 6: Final answer
    x = 91,785.82

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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.