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Finding the Fourth Proportional to 159,593.69, 220,236.57 and 87,980.38

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Solution

The fourth proportional to 159,593.69, 220,236.57 and 87,980.38 is: 121,411.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,593.69 : 220,236.57 = 87,980.38 : x
  2. Step 2: Convert to fraction form
    159,593.69/220,236.57 = 87,980.38/x
  3. Step 3: Cross multiply
    159,593.69x = 220,236.57 × 87,980.38
  4. Step 4: Simplify right side
    159,593.69x = 19,376,496,567.91
  5. Step 5: Solve for x
    x = 19,376,496,567.91/159,593.69
  6. Step 6: Final answer
    x = 121,411.42

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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.