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Finding the Fourth Proportional to 155,563.48, 214,621.45 and 101,879.11

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Solution

The fourth proportional to 155,563.48, 214,621.45 and 101,879.11 is: 140,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,563.48 : 214,621.45 = 101,879.11 : x
  2. Step 2: Convert to fraction form
    155,563.48/214,621.45 = 101,879.11/x
  3. Step 3: Cross multiply
    155,563.48x = 214,621.45 × 101,879.11
  4. Step 4: Simplify right side
    155,563.48x = 21,865,442,312.91
  5. Step 5: Solve for x
    x = 21,865,442,312.91/155,563.48
  6. Step 6: Final answer
    x = 140,556.40

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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.