Home / 203,781.12-281,154.78-118,838.04

Finding the Fourth Proportional to 203,781.12, 281,154.78 and 118,838.04

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Solution

The fourth proportional to 203,781.12, 281,154.78 and 118,838.04 is: 163,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,781.12 : 281,154.78 = 118,838.04 : x
  2. Step 2: Convert to fraction form
    203,781.12/281,154.78 = 118,838.04/x
  3. Step 3: Cross multiply
    203,781.12x = 281,154.78 × 118,838.04
  4. Step 4: Simplify right side
    203,781.12x = 33,411,882,991.83
  5. Step 5: Solve for x
    x = 33,411,882,991.83/203,781.12
  6. Step 6: Final answer
    x = 163,959.66

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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.