Home / 159,120.12-219,582.49-87,498.91

Finding the Fourth Proportional to 159,120.12, 219,582.49 and 87,498.91

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Solution

The fourth proportional to 159,120.12, 219,582.49 and 87,498.91 is: 120,746.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,120.12 : 219,582.49 = 87,498.91 : x
  2. Step 2: Convert to fraction form
    159,120.12/219,582.49 = 87,498.91/x
  3. Step 3: Cross multiply
    159,120.12x = 219,582.49 × 87,498.91
  4. Step 4: Simplify right side
    159,120.12x = 19,213,228,530.09
  5. Step 5: Solve for x
    x = 19,213,228,530.09/159,120.12
  6. Step 6: Final answer
    x = 120,746.69

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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.