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Finding the Fourth Proportional to 91,751.30, 137,651.55 and 73,101.65

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Solution

The fourth proportional to 91,751.30, 137,651.55 and 73,101.65 is: 109,672.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,751.30 : 137,651.55 = 73,101.65 : x
  2. Step 2: Convert to fraction form
    91,751.30/137,651.55 = 73,101.65/x
  3. Step 3: Cross multiply
    91,751.30x = 137,651.55 × 73,101.65
  4. Step 4: Simplify right side
    91,751.30x = 10,062,555,430.06
  5. Step 5: Solve for x
    x = 10,062,555,430.06/91,751.30
  6. Step 6: Final answer
    x = 109,672.07

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1.5x scale

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.