Home / 111,932.74-154,420.05-74,141.38

Finding the Fourth Proportional to 111,932.74, 154,420.05 and 74,141.38

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Solution

The fourth proportional to 111,932.74, 154,420.05 and 74,141.38 is: 102,283.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,932.74 : 154,420.05 = 74,141.38 : x
  2. Step 2: Convert to fraction form
    111,932.74/154,420.05 = 74,141.38/x
  3. Step 3: Cross multiply
    111,932.74x = 154,420.05 × 74,141.38
  4. Step 4: Simplify right side
    111,932.74x = 11,448,915,606.67
  5. Step 5: Solve for x
    x = 11,448,915,606.67/111,932.74
  6. Step 6: Final answer
    x = 102,283.89

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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.