Home / 138,623.83-191,301.26-74,961.65

Finding the Fourth Proportional to 138,623.83, 191,301.26 and 74,961.65

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Solution

The fourth proportional to 138,623.83, 191,301.26 and 74,961.65 is: 103,447.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,623.83 : 191,301.26 = 74,961.65 : x
  2. Step 2: Convert to fraction form
    138,623.83/191,301.26 = 74,961.65/x
  3. Step 3: Cross multiply
    138,623.83x = 191,301.26 × 74,961.65
  4. Step 4: Simplify right side
    138,623.83x = 14,340,258,200.12
  5. Step 5: Solve for x
    x = 14,340,258,200.12/138,623.83
  6. Step 6: Final answer
    x = 103,447.28

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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.