Home / 138,748.28-191,473.20-75,086.06

Finding the Fourth Proportional to 138,748.28, 191,473.20 and 75,086.06

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Solution

The fourth proportional to 138,748.28, 191,473.20 and 75,086.06 is: 103,619.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,748.28 : 191,473.20 = 75,086.06 : x
  2. Step 2: Convert to fraction form
    138,748.28/191,473.20 = 75,086.06/x
  3. Step 3: Cross multiply
    138,748.28x = 191,473.20 × 75,086.06
  4. Step 4: Simplify right side
    138,748.28x = 14,376,967,226.23
  5. Step 5: Solve for x
    x = 14,376,967,226.23/138,748.28
  6. Step 6: Final answer
    x = 103,619.07

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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.