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Finding the Fourth Proportional to 188,777.52, 260,518.14 and 103,899.78

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Solution

The fourth proportional to 188,777.52, 260,518.14 and 103,899.78 is: 143,384.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,777.52 : 260,518.14 = 103,899.78 : x
  2. Step 2: Convert to fraction form
    188,777.52/260,518.14 = 103,899.78/x
  3. Step 3: Cross multiply
    188,777.52x = 260,518.14 × 103,899.78
  4. Step 4: Simplify right side
    188,777.52x = 27,067,777,432.01
  5. Step 5: Solve for x
    x = 27,067,777,432.01/188,777.52
  6. Step 6: Final answer
    x = 143,384.54

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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.