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Finding the Fourth Proportional to 138,450.44, 191,061.65 and 74,788.22

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Solution

The fourth proportional to 138,450.44, 191,061.65 and 74,788.22 is: 103,207.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,450.44 : 191,061.65 = 74,788.22 : x
  2. Step 2: Convert to fraction form
    138,450.44/191,061.65 = 74,788.22/x
  3. Step 3: Cross multiply
    138,450.44x = 191,061.65 × 74,788.22
  4. Step 4: Simplify right side
    138,450.44x = 14,289,160,713.76
  5. Step 5: Solve for x
    x = 14,289,160,713.76/138,450.44
  6. Step 6: Final answer
    x = 103,207.77

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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.