Home / 159,071.10-219,515.07-87,450.42

Finding the Fourth Proportional to 159,071.10, 219,515.07 and 87,450.42

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Solution

The fourth proportional to 159,071.10, 219,515.07 and 87,450.42 is: 120,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,071.10 : 219,515.07 = 87,450.42 : x
  2. Step 2: Convert to fraction form
    159,071.10/219,515.07 = 87,450.42/x
  3. Step 3: Cross multiply
    159,071.10x = 219,515.07 × 87,450.42
  4. Step 4: Simplify right side
    159,071.10x = 19,196,685,067.83
  5. Step 5: Solve for x
    x = 19,196,685,067.83/159,071.10
  6. Step 6: Final answer
    x = 120,679.90

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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.