Home / 145,398.32-200,634.38-80,857.10

Finding the Fourth Proportional to 145,398.32, 200,634.38 and 80,857.10

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Solution

The fourth proportional to 145,398.32, 200,634.38 and 80,857.10 is: 111,574.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,398.32 : 200,634.38 = 80,857.10 : x
  2. Step 2: Convert to fraction form
    145,398.32/200,634.38 = 80,857.10/x
  3. Step 3: Cross multiply
    145,398.32x = 200,634.38 × 80,857.10
  4. Step 4: Simplify right side
    145,398.32x = 16,222,714,982.43
  5. Step 5: Solve for x
    x = 16,222,714,982.43/145,398.32
  6. Step 6: Final answer
    x = 111,574.29

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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.