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Finding the Fourth Proportional to 159,612.83, 220,267.41 and 87,995.42

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Solution

The fourth proportional to 159,612.83, 220,267.41 and 87,995.42 is: 121,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,612.83 : 220,267.41 = 87,995.42 : x
  2. Step 2: Convert to fraction form
    159,612.83/220,267.41 = 87,995.42/x
  3. Step 3: Cross multiply
    159,612.83x = 220,267.41 × 87,995.42
  4. Step 4: Simplify right side
    159,612.83x = 19,382,522,649.95
  5. Step 5: Solve for x
    x = 19,382,522,649.95/159,612.83
  6. Step 6: Final answer
    x = 121,434.61

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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.