Home / 138,987.18-208,479.03-33,806.22

Finding the Fourth Proportional to 138,987.18, 208,479.03 and 33,806.22

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Solution

The fourth proportional to 138,987.18, 208,479.03 and 33,806.22 is: 50,708.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,987.18 : 208,479.03 = 33,806.22 : x
  2. Step 2: Convert to fraction form
    138,987.18/208,479.03 = 33,806.22/x
  3. Step 3: Cross multiply
    138,987.18x = 208,479.03 × 33,806.22
  4. Step 4: Simplify right side
    138,987.18x = 7,047,887,953.57
  5. Step 5: Solve for x
    x = 7,047,887,953.57/138,987.18
  6. Step 6: Final answer
    x = 50,708.91

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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.