Home / 138,819.70-191,570.94-75,157.48

Finding the Fourth Proportional to 138,819.70, 191,570.94 and 75,157.48

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Solution

The fourth proportional to 138,819.70, 191,570.94 and 75,157.48 is: 103,717.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,819.70 : 191,570.94 = 75,157.48 : x
  2. Step 2: Convert to fraction form
    138,819.70/191,570.94 = 75,157.48/x
  3. Step 3: Cross multiply
    138,819.70x = 191,570.94 × 75,157.48
  4. Step 4: Simplify right side
    138,819.70x = 14,397,989,091.63
  5. Step 5: Solve for x
    x = 14,397,989,091.63/138,819.70
  6. Step 6: Final answer
    x = 103,717.19

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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.