Home / 131,055.40-196,274.49-86,571.82

Finding the Fourth Proportional to 131,055.40, 196,274.49 and 86,571.82

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Solution

The fourth proportional to 131,055.40, 196,274.49 and 86,571.82 is: 129,653.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,055.40 : 196,274.49 = 86,571.82 : x
  2. Step 2: Convert to fraction form
    131,055.40/196,274.49 = 86,571.82/x
  3. Step 3: Cross multiply
    131,055.40x = 196,274.49 × 86,571.82
  4. Step 4: Simplify right side
    131,055.40x = 16,991,839,818.87
  5. Step 5: Solve for x
    x = 16,991,839,818.87/131,055.40
  6. Step 6: Final answer
    x = 129,653.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.