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Finding the Fourth Proportional to 138,987.88, 208,479.84 and 33,807.04

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Solution

The fourth proportional to 138,987.88, 208,479.84 and 33,807.04 is: 50,710.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,987.88 : 208,479.84 = 33,807.04 : x
  2. Step 2: Convert to fraction form
    138,987.88/208,479.84 = 33,807.04/x
  3. Step 3: Cross multiply
    138,987.88x = 208,479.84 × 33,807.04
  4. Step 4: Simplify right side
    138,987.88x = 7,048,086,290.07
  5. Step 5: Solve for x
    x = 7,048,086,290.07/138,987.88
  6. Step 6: Final answer
    x = 50,710.08

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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.