Home / 138,394.11-190,944.36-77,943.61

Finding the Fourth Proportional to 138,394.11, 190,944.36 and 77,943.61

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Solution

The fourth proportional to 138,394.11, 190,944.36 and 77,943.61 is: 107,539.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,394.11 : 190,944.36 = 77,943.61 : x
  2. Step 2: Convert to fraction form
    138,394.11/190,944.36 = 77,943.61/x
  3. Step 3: Cross multiply
    138,394.11x = 190,944.36 × 77,943.61
  4. Step 4: Simplify right side
    138,394.11x = 14,882,892,250.18
  5. Step 5: Solve for x
    x = 14,882,892,250.18/138,394.11
  6. Step 6: Final answer
    x = 107,539.93

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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.