Home / 92,017.20-137,939.40-72,015.60

Finding the Fourth Proportional to 92,017.20, 137,939.40 and 72,015.60

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Solution

The fourth proportional to 92,017.20, 137,939.40 and 72,015.60 is: 107,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,017.20 : 137,939.40 = 72,015.60 : x
  2. Step 2: Convert to fraction form
    92,017.20/137,939.40 = 72,015.60/x
  3. Step 3: Cross multiply
    92,017.20x = 137,939.40 × 72,015.60
  4. Step 4: Simplify right side
    92,017.20x = 9,933,788,654.64
  5. Step 5: Solve for x
    x = 9,933,788,654.64/92,017.20
  6. Step 6: Final answer
    x = 107,955.78

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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.