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Finding the Fourth Proportional to 188,514, 260,155.40 and 103,637.20

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Solution

The fourth proportional to 188,514, 260,155.40 and 103,637.20 is: 143,022.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,514 : 260,155.40 = 103,637.20 : x
  2. Step 2: Convert to fraction form
    188,514/260,155.40 = 103,637.20/x
  3. Step 3: Cross multiply
    188,514x = 260,155.40 × 103,637.20
  4. Step 4: Simplify right side
    188,514x = 26,961,777,220.88
  5. Step 5: Solve for x
    x = 26,961,777,220.88/188,514
  6. Step 6: Final answer
    x = 143,022.68

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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.