Home / 91,388.20-137,029.53-28,191.35

Finding the Fourth Proportional to 91,388.20, 137,029.53 and 28,191.35

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Solution

The fourth proportional to 91,388.20, 137,029.53 and 28,191.35 is: 42,270.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,388.20 : 137,029.53 = 28,191.35 : x
  2. Step 2: Convert to fraction form
    91,388.20/137,029.53 = 28,191.35/x
  3. Step 3: Cross multiply
    91,388.20x = 137,029.53 × 28,191.35
  4. Step 4: Simplify right side
    91,388.20x = 3,863,047,888.86
  5. Step 5: Solve for x
    x = 3,863,047,888.86/91,388.20
  6. Step 6: Final answer
    x = 42,270.75

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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.