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Finding the Fourth Proportional to 138,634.88, 191,367.88 and 107,947.22

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Solution

The fourth proportional to 138,634.88, 191,367.88 and 107,947.22 is: 149,007.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,634.88 : 191,367.88 = 107,947.22 : x
  2. Step 2: Convert to fraction form
    138,634.88/191,367.88 = 107,947.22/x
  3. Step 3: Cross multiply
    138,634.88x = 191,367.88 × 107,947.22
  4. Step 4: Simplify right side
    138,634.88x = 20,657,630,643.29
  5. Step 5: Solve for x
    x = 20,657,630,643.29/138,634.88
  6. Step 6: Final answer
    x = 149,007.46

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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.