Home / 138,620.33-191,296.26-74,958.13

Finding the Fourth Proportional to 138,620.33, 191,296.26 and 74,958.13

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Solution

The fourth proportional to 138,620.33, 191,296.26 and 74,958.13 is: 103,442.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,620.33 : 191,296.26 = 74,958.13 : x
  2. Step 2: Convert to fraction form
    138,620.33/191,296.26 = 74,958.13/x
  3. Step 3: Cross multiply
    138,620.33x = 191,296.26 × 74,958.13
  4. Step 4: Simplify right side
    138,620.33x = 14,339,209,925.59
  5. Step 5: Solve for x
    x = 14,339,209,925.59/138,620.33
  6. Step 6: Final answer
    x = 103,442.33

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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.