Home / 203,579.32-280,881.64-118,680

Finding the Fourth Proportional to 203,579.32, 280,881.64 and 118,680

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Solution

The fourth proportional to 203,579.32, 280,881.64 and 118,680 is: 163,744.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,579.32 : 280,881.64 = 118,680 : x
  2. Step 2: Convert to fraction form
    203,579.32/280,881.64 = 118,680/x
  3. Step 3: Cross multiply
    203,579.32x = 280,881.64 × 118,680
  4. Step 4: Simplify right side
    203,579.32x = 33,335,033,035.20
  5. Step 5: Solve for x
    x = 33,335,033,035.20/203,579.32
  6. Step 6: Final answer
    x = 163,744.69

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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.