Home / 185,018.73-255,325.84-100,135.79

Finding the Fourth Proportional to 185,018.73, 255,325.84 and 100,135.79

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Solution

The fourth proportional to 185,018.73, 255,325.84 and 100,135.79 is: 138,187.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,018.73 : 255,325.84 = 100,135.79 : x
  2. Step 2: Convert to fraction form
    185,018.73/255,325.84 = 100,135.79/x
  3. Step 3: Cross multiply
    185,018.73x = 255,325.84 × 100,135.79
  4. Step 4: Simplify right side
    185,018.73x = 25,567,254,695.81
  5. Step 5: Solve for x
    x = 25,567,254,695.81/185,018.73
  6. Step 6: Final answer
    x = 138,187.39

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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.