Home / 185,786.18-256,386.81-100,904.90

Finding the Fourth Proportional to 185,786.18, 256,386.81 and 100,904.90

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Solution

The fourth proportional to 185,786.18, 256,386.81 and 100,904.90 is: 139,249.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,786.18 : 256,386.81 = 100,904.90 : x
  2. Step 2: Convert to fraction form
    185,786.18/256,386.81 = 100,904.90/x
  3. Step 3: Cross multiply
    185,786.18x = 256,386.81 × 100,904.90
  4. Step 4: Simplify right side
    185,786.18x = 25,870,685,424.37
  5. Step 5: Solve for x
    x = 25,870,685,424.37/185,786.18
  6. Step 6: Final answer
    x = 139,249.78

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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.