Home / 138,808.45-191,555.44-75,146.23

Finding the Fourth Proportional to 138,808.45, 191,555.44 and 75,146.23

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Solution

The fourth proportional to 138,808.45, 191,555.44 and 75,146.23 is: 103,701.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,808.45 : 191,555.44 = 75,146.23 : x
  2. Step 2: Convert to fraction form
    138,808.45/191,555.44 = 75,146.23/x
  3. Step 3: Cross multiply
    138,808.45x = 191,555.44 × 75,146.23
  4. Step 4: Simplify right side
    138,808.45x = 14,394,669,151.99
  5. Step 5: Solve for x
    x = 14,394,669,151.99/138,808.45
  6. Step 6: Final answer
    x = 103,701.68

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1.5x scale

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.