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Finding the Fourth Proportional to 455,987.38, 684,015.43 and 136,113.97

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Solution

The fourth proportional to 455,987.38, 684,015.43 and 136,113.97 is: 204,181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,987.38 : 684,015.43 = 136,113.97 : x
  2. Step 2: Convert to fraction form
    455,987.38/684,015.43 = 136,113.97/x
  3. Step 3: Cross multiply
    455,987.38x = 684,015.43 × 136,113.97
  4. Step 4: Simplify right side
    455,987.38x = 93,104,055,037.99
  5. Step 5: Solve for x
    x = 93,104,055,037.99/455,987.38
  6. Step 6: Final answer
    x = 204,181.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.