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Finding the Fourth Proportional to 159,596.70, 220,240.70 and 87,983.38

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Solution

The fourth proportional to 159,596.70, 220,240.70 and 87,983.38 is: 121,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,596.70 : 220,240.70 = 87,983.38 : x
  2. Step 2: Convert to fraction form
    159,596.70/220,240.70 = 87,983.38/x
  3. Step 3: Cross multiply
    159,596.70x = 220,240.70 × 87,983.38
  4. Step 4: Simplify right side
    159,596.70x = 19,377,521,199.57
  5. Step 5: Solve for x
    x = 19,377,521,199.57/159,596.70
  6. Step 6: Final answer
    x = 121,415.55

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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.