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Finding the Fourth Proportional to 137,952.66, 190,374.48 and 80,631.39

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Solution

The fourth proportional to 137,952.66, 190,374.48 and 80,631.39 is: 111,271.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,952.66 : 190,374.48 = 80,631.39 : x
  2. Step 2: Convert to fraction form
    137,952.66/190,374.48 = 80,631.39/x
  3. Step 3: Cross multiply
    137,952.66x = 190,374.48 × 80,631.39
  4. Step 4: Simplify right side
    137,952.66x = 15,350,158,942.93
  5. Step 5: Solve for x
    x = 15,350,158,942.93/137,952.66
  6. Step 6: Final answer
    x = 111,271.21

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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.