Home / 138,766.18-191,497.90-75,103.96

Finding the Fourth Proportional to 138,766.18, 191,497.90 and 75,103.96

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Solution

The fourth proportional to 138,766.18, 191,497.90 and 75,103.96 is: 103,643.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,766.18 : 191,497.90 = 75,103.96 : x
  2. Step 2: Convert to fraction form
    138,766.18/191,497.90 = 75,103.96/x
  3. Step 3: Cross multiply
    138,766.18x = 191,497.90 × 75,103.96
  4. Step 4: Simplify right side
    138,766.18x = 14,382,250,621.68
  5. Step 5: Solve for x
    x = 14,382,250,621.68/138,766.18
  6. Step 6: Final answer
    x = 103,643.77

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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.