Home / 138,871.20-208,307.12-50,187.36

Finding the Fourth Proportional to 138,871.20, 208,307.12 and 50,187.36

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Solution

The fourth proportional to 138,871.20, 208,307.12 and 50,187.36 is: 75,281.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,871.20 : 208,307.12 = 50,187.36 : x
  2. Step 2: Convert to fraction form
    138,871.20/208,307.12 = 50,187.36/x
  3. Step 3: Cross multiply
    138,871.20x = 208,307.12 × 50,187.36
  4. Step 4: Simplify right side
    138,871.20x = 10,454,384,422.00
  5. Step 5: Solve for x
    x = 10,454,384,422.00/138,871.20
  6. Step 6: Final answer
    x = 75,281.16

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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.