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Finding the Fourth Proportional to 137,885.82, 190,252.89 and 80,499.08

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Solution

The fourth proportional to 137,885.82, 190,252.89 and 80,499.08 is: 111,071.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,885.82 : 190,252.89 = 80,499.08 : x
  2. Step 2: Convert to fraction form
    137,885.82/190,252.89 = 80,499.08/x
  3. Step 3: Cross multiply
    137,885.82x = 190,252.89 × 80,499.08
  4. Step 4: Simplify right side
    137,885.82x = 15,315,181,661.08
  5. Step 5: Solve for x
    x = 15,315,181,661.08/137,885.82
  6. Step 6: Final answer
    x = 111,071.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.