Home / 138,977.57-191,789.03-75,315.39

Finding the Fourth Proportional to 138,977.57, 191,789.03 and 75,315.39

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Solution

The fourth proportional to 138,977.57, 191,789.03 and 75,315.39 is: 103,935.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,977.57 : 191,789.03 = 75,315.39 : x
  2. Step 2: Convert to fraction form
    138,977.57/191,789.03 = 75,315.39/x
  3. Step 3: Cross multiply
    138,977.57x = 191,789.03 × 75,315.39
  4. Step 4: Simplify right side
    138,977.57x = 14,444,665,061.25
  5. Step 5: Solve for x
    x = 14,444,665,061.25/138,977.57
  6. Step 6: Final answer
    x = 103,935.22

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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.