Home / 203,119.64-280,285.54-121,431.74

Finding the Fourth Proportional to 203,119.64, 280,285.54 and 121,431.74

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Solution

The fourth proportional to 203,119.64, 280,285.54 and 121,431.74 is: 167,564.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,119.64 : 280,285.54 = 121,431.74 : x
  2. Step 2: Convert to fraction form
    203,119.64/280,285.54 = 121,431.74/x
  3. Step 3: Cross multiply
    203,119.64x = 280,285.54 × 121,431.74
  4. Step 4: Simplify right side
    203,119.64x = 34,035,561,216.17
  5. Step 5: Solve for x
    x = 34,035,561,216.17/203,119.64
  6. Step 6: Final answer
    x = 167,564.11

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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.