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Finding the Fourth Proportional to 159,514.26, 220,139.52 and 87,894.28

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Solution

The fourth proportional to 159,514.26, 220,139.52 and 87,894.28 is: 121,299.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,514.26 : 220,139.52 = 87,894.28 : x
  2. Step 2: Convert to fraction form
    159,514.26/220,139.52 = 87,894.28/x
  3. Step 3: Cross multiply
    159,514.26x = 220,139.52 × 87,894.28
  4. Step 4: Simplify right side
    159,514.26x = 19,349,004,609.95
  5. Step 5: Solve for x
    x = 19,349,004,609.95/159,514.26
  6. Step 6: Final answer
    x = 121,299.53

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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.