Home / 111,787.36-154,330.32-74,112.64

Finding the Fourth Proportional to 111,787.36, 154,330.32 and 74,112.64

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Solution

The fourth proportional to 111,787.36, 154,330.32 and 74,112.64 is: 102,317.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,787.36 : 154,330.32 = 74,112.64 : x
  2. Step 2: Convert to fraction form
    111,787.36/154,330.32 = 74,112.64/x
  3. Step 3: Cross multiply
    111,787.36x = 154,330.32 × 74,112.64
  4. Step 4: Simplify right side
    111,787.36x = 11,437,827,447.24
  5. Step 5: Solve for x
    x = 11,437,827,447.24/111,787.36
  6. Step 6: Final answer
    x = 102,317.72

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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.