Home / 138,811.85-191,558.07-75,149.13

Finding the Fourth Proportional to 138,811.85, 191,558.07 and 75,149.13

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Solution

The fourth proportional to 138,811.85, 191,558.07 and 75,149.13 is: 103,704.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,811.85 : 191,558.07 = 75,149.13 : x
  2. Step 2: Convert to fraction form
    138,811.85/191,558.07 = 75,149.13/x
  3. Step 3: Cross multiply
    138,811.85x = 191,558.07 × 75,149.13
  4. Step 4: Simplify right side
    138,811.85x = 14,395,421,929.23
  5. Step 5: Solve for x
    x = 14,395,421,929.23/138,811.85
  6. Step 6: Final answer
    x = 103,704.56

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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.