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Finding the Fourth Proportional to 138,895.01, 191,675.51 and 75,232.80

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Solution

The fourth proportional to 138,895.01, 191,675.51 and 75,232.80 is: 103,821.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,895.01 : 191,675.51 = 75,232.80 : x
  2. Step 2: Convert to fraction form
    138,895.01/191,675.51 = 75,232.80/x
  3. Step 3: Cross multiply
    138,895.01x = 191,675.51 × 75,232.80
  4. Step 4: Simplify right side
    138,895.01x = 14,420,284,932.56
  5. Step 5: Solve for x
    x = 14,420,284,932.56/138,895.01
  6. Step 6: Final answer
    x = 103,821.48

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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.