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Finding the Fourth Proportional to 157,636.78, 217,538.74 and 101,048.15

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Solution

The fourth proportional to 157,636.78, 217,538.74 and 101,048.15 is: 139,446.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,636.78 : 217,538.74 = 101,048.15 : x
  2. Step 2: Convert to fraction form
    157,636.78/217,538.74 = 101,048.15/x
  3. Step 3: Cross multiply
    157,636.78x = 217,538.74 × 101,048.15
  4. Step 4: Simplify right side
    157,636.78x = 21,981,887,230.33
  5. Step 5: Solve for x
    x = 21,981,887,230.33/157,636.78
  6. Step 6: Final answer
    x = 139,446.44

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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.