Home / 138,573.29-191,231.24-74,911.07

Finding the Fourth Proportional to 138,573.29, 191,231.24 and 74,911.07

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Solution

The fourth proportional to 138,573.29, 191,231.24 and 74,911.07 is: 103,377.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,573.29 : 191,231.24 = 74,911.07 : x
  2. Step 2: Convert to fraction form
    138,573.29/191,231.24 = 74,911.07/x
  3. Step 3: Cross multiply
    138,573.29x = 191,231.24 × 74,911.07
  4. Step 4: Simplify right side
    138,573.29x = 14,325,336,036.95
  5. Step 5: Solve for x
    x = 14,325,336,036.95/138,573.29
  6. Step 6: Final answer
    x = 103,377.33

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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.