Home / 138,936.04-191,731.26-75,274.90

Finding the Fourth Proportional to 138,936.04, 191,731.26 and 75,274.90

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Solution

The fourth proportional to 138,936.04, 191,731.26 and 75,274.90 is: 103,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,936.04 : 191,731.26 = 75,274.90 : x
  2. Step 2: Convert to fraction form
    138,936.04/191,731.26 = 75,274.90/x
  3. Step 3: Cross multiply
    138,936.04x = 191,731.26 × 75,274.90
  4. Step 4: Simplify right side
    138,936.04x = 14,432,551,423.37
  5. Step 5: Solve for x
    x = 14,432,551,423.37/138,936.04
  6. Step 6: Final answer
    x = 103,879.10

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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.