Home / 91,750.30-137,650.05-73,100.65

Finding the Fourth Proportional to 91,750.30, 137,650.05 and 73,100.65

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Solution

The fourth proportional to 91,750.30, 137,650.05 and 73,100.65 is: 109,670.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,750.30 : 137,650.05 = 73,100.65 : x
  2. Step 2: Convert to fraction form
    91,750.30/137,650.05 = 73,100.65/x
  3. Step 3: Cross multiply
    91,750.30x = 137,650.05 × 73,100.65
  4. Step 4: Simplify right side
    91,750.30x = 10,062,308,127.53
  5. Step 5: Solve for x
    x = 10,062,308,127.53/91,750.30
  6. Step 6: Final answer
    x = 109,670.57

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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.