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Finding the Fourth Proportional to 135,991.61, 203,987.37 and 42,497.36

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Solution

The fourth proportional to 135,991.61, 203,987.37 and 42,497.36 is: 63,746.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,991.61 : 203,987.37 = 42,497.36 : x
  2. Step 2: Convert to fraction form
    135,991.61/203,987.37 = 42,497.36/x
  3. Step 3: Cross multiply
    135,991.61x = 203,987.37 × 42,497.36
  4. Step 4: Simplify right side
    135,991.61x = 8,668,923,678.41
  5. Step 5: Solve for x
    x = 8,668,923,678.41/135,991.61
  6. Step 6: Final answer
    x = 63,746.02

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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.