Home / 159,195.36-219,693.12-87,579.20

Finding the Fourth Proportional to 159,195.36, 219,693.12 and 87,579.20

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Solution

The fourth proportional to 159,195.36, 219,693.12 and 87,579.20 is: 120,861.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,195.36 : 219,693.12 = 87,579.20 : x
  2. Step 2: Convert to fraction form
    159,195.36/219,693.12 = 87,579.20/x
  3. Step 3: Cross multiply
    159,195.36x = 219,693.12 × 87,579.20
  4. Step 4: Simplify right side
    159,195.36x = 19,240,547,695.10
  5. Step 5: Solve for x
    x = 19,240,547,695.10/159,195.36
  6. Step 6: Final answer
    x = 120,861.23

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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.