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Finding the Fourth Proportional to 188,774.52, 260,514 and 103,896.78

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Solution

The fourth proportional to 188,774.52, 260,514 and 103,896.78 is: 143,380.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,774.52 : 260,514 = 103,896.78 : x
  2. Step 2: Convert to fraction form
    188,774.52/260,514 = 103,896.78/x
  3. Step 3: Cross multiply
    188,774.52x = 260,514 × 103,896.78
  4. Step 4: Simplify right side
    188,774.52x = 27,066,565,744.92
  5. Step 5: Solve for x
    x = 27,066,565,744.92/188,774.52
  6. Step 6: Final answer
    x = 143,380.40

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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.