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Finding the Fourth Proportional to 159,074.66, 219,521.94 and 87,452.84

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Solution

The fourth proportional to 159,074.66, 219,521.94 and 87,452.84 is: 120,684.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,074.66 : 219,521.94 = 87,452.84 : x
  2. Step 2: Convert to fraction form
    159,074.66/219,521.94 = 87,452.84/x
  3. Step 3: Cross multiply
    159,074.66x = 219,521.94 × 87,452.84
  4. Step 4: Simplify right side
    159,074.66x = 19,197,817,095.31
  5. Step 5: Solve for x
    x = 19,197,817,095.31/159,074.66
  6. Step 6: Final answer
    x = 120,684.32

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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.