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Finding the Fourth Proportional to 243,571.75, 336,105.92 and 136,139.32

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Solution

The fourth proportional to 243,571.75, 336,105.92 and 136,139.32 is: 187,859.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,571.75 : 336,105.92 = 136,139.32 : x
  2. Step 2: Convert to fraction form
    243,571.75/336,105.92 = 136,139.32/x
  3. Step 3: Cross multiply
    243,571.75x = 336,105.92 × 136,139.32
  4. Step 4: Simplify right side
    243,571.75x = 45,757,231,396.77
  5. Step 5: Solve for x
    x = 45,757,231,396.77/243,571.75
  6. Step 6: Final answer
    x = 187,859.35

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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.