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Finding the Fourth Proportional to 91,622.80, 137,434.20 and 73,805.20

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Solution

The fourth proportional to 91,622.80, 137,434.20 and 73,805.20 is: 110,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,622.80 : 137,434.20 = 73,805.20 : x
  2. Step 2: Convert to fraction form
    91,622.80/137,434.20 = 73,805.20/x
  3. Step 3: Cross multiply
    91,622.80x = 137,434.20 × 73,805.20
  4. Step 4: Simplify right side
    91,622.80x = 10,143,358,617.84
  5. Step 5: Solve for x
    x = 10,143,358,617.84/91,622.80
  6. Step 6: Final answer
    x = 110,707.80

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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.