Home / 138,929.99-191,723.71-75,267.79

Finding the Fourth Proportional to 138,929.99, 191,723.71 and 75,267.79

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Solution

The fourth proportional to 138,929.99, 191,723.71 and 75,267.79 is: 103,869.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,929.99 : 191,723.71 = 75,267.79 : x
  2. Step 2: Convert to fraction form
    138,929.99/191,723.71 = 75,267.79/x
  3. Step 3: Cross multiply
    138,929.99x = 191,723.71 × 75,267.79
  4. Step 4: Simplify right side
    138,929.99x = 14,430,619,942.30
  5. Step 5: Solve for x
    x = 14,430,619,942.30/138,929.99
  6. Step 6: Final answer
    x = 103,869.73

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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.