Home / 138,462.57-208,127.39-91,380.22

Finding the Fourth Proportional to 138,462.57, 208,127.39 and 91,380.22

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Solution

The fourth proportional to 138,462.57, 208,127.39 and 91,380.22 is: 137,356.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,462.57 : 208,127.39 = 91,380.22 : x
  2. Step 2: Convert to fraction form
    138,462.57/208,127.39 = 91,380.22/x
  3. Step 3: Cross multiply
    138,462.57x = 208,127.39 × 91,380.22
  4. Step 4: Simplify right side
    138,462.57x = 19,018,725,709.01
  5. Step 5: Solve for x
    x = 19,018,725,709.01/138,462.57
  6. Step 6: Final answer
    x = 137,356.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.