Home / 185,142.15-255,496.95-100,259.28

Finding the Fourth Proportional to 185,142.15, 255,496.95 and 100,259.28

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Solution

The fourth proportional to 185,142.15, 255,496.95 and 100,259.28 is: 138,358.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,142.15 : 255,496.95 = 100,259.28 : x
  2. Step 2: Convert to fraction form
    185,142.15/255,496.95 = 100,259.28/x
  3. Step 3: Cross multiply
    185,142.15x = 255,496.95 × 100,259.28
  4. Step 4: Simplify right side
    185,142.15x = 25,615,940,249.20
  5. Step 5: Solve for x
    x = 25,615,940,249.20/185,142.15
  6. Step 6: Final answer
    x = 138,358.23

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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.