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Finding the Fourth Proportional to 111,363.65, 153,641.55 and 73,143.92

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Solution

The fourth proportional to 111,363.65, 153,641.55 and 73,143.92 is: 100,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,363.65 : 153,641.55 = 73,143.92 : x
  2. Step 2: Convert to fraction form
    111,363.65/153,641.55 = 73,143.92/x
  3. Step 3: Cross multiply
    111,363.65x = 153,641.55 × 73,143.92
  4. Step 4: Simplify right side
    111,363.65x = 11,237,945,241.88
  5. Step 5: Solve for x
    x = 11,237,945,241.88/111,363.65
  6. Step 6: Final answer
    x = 100,912.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.