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Finding the Fourth Proportional to 146,805.89, 220,207.62 and 87,247.13

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Solution

The fourth proportional to 146,805.89, 220,207.62 and 87,247.13 is: 130,869.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,805.89 : 220,207.62 = 87,247.13 : x
  2. Step 2: Convert to fraction form
    146,805.89/220,207.62 = 87,247.13/x
  3. Step 3: Cross multiply
    146,805.89x = 220,207.62 × 87,247.13
  4. Step 4: Simplify right side
    146,805.89x = 19,212,482,849.13
  5. Step 5: Solve for x
    x = 19,212,482,849.13/146,805.89
  6. Step 6: Final answer
    x = 130,869.97

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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.