Home / 158,965.08-219,371.76-87,345

Finding the Fourth Proportional to 158,965.08, 219,371.76 and 87,345

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Solution

The fourth proportional to 158,965.08, 219,371.76 and 87,345 is: 120,536.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,965.08 : 219,371.76 = 87,345 : x
  2. Step 2: Convert to fraction form
    158,965.08/219,371.76 = 87,345/x
  3. Step 3: Cross multiply
    158,965.08x = 219,371.76 × 87,345
  4. Step 4: Simplify right side
    158,965.08x = 19,161,026,377.20
  5. Step 5: Solve for x
    x = 19,161,026,377.20/158,965.08
  6. Step 6: Final answer
    x = 120,536.07

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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.