Home / 138,803.46-191,548.83-75,141.25

Finding the Fourth Proportional to 138,803.46, 191,548.83 and 75,141.25

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Solution

The fourth proportional to 138,803.46, 191,548.83 and 75,141.25 is: 103,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,803.46 : 191,548.83 = 75,141.25 : x
  2. Step 2: Convert to fraction form
    138,803.46/191,548.83 = 75,141.25/x
  3. Step 3: Cross multiply
    138,803.46x = 191,548.83 × 75,141.25
  4. Step 4: Simplify right side
    138,803.46x = 14,393,218,522.24
  5. Step 5: Solve for x
    x = 14,393,218,522.24/138,803.46
  6. Step 6: Final answer
    x = 103,694.96

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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.