Home / 138,935.80-208,403.70-50,192.20

Finding the Fourth Proportional to 138,935.80, 208,403.70 and 50,192.20

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Solution

The fourth proportional to 138,935.80, 208,403.70 and 50,192.20 is: 75,288.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,935.80 : 208,403.70 = 50,192.20 : x
  2. Step 2: Convert to fraction form
    138,935.80/208,403.70 = 50,192.20/x
  3. Step 3: Cross multiply
    138,935.80x = 208,403.70 × 50,192.20
  4. Step 4: Simplify right side
    138,935.80x = 10,460,240,191.14
  5. Step 5: Solve for x
    x = 10,460,240,191.14/138,935.80
  6. Step 6: Final answer
    x = 75,288.30

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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.