Home / 178,825.12-268,178.45-72,181.53

Finding the Fourth Proportional to 178,825.12, 268,178.45 and 72,181.53

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Solution

The fourth proportional to 178,825.12, 268,178.45 and 72,181.53 is: 108,248.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,825.12 : 268,178.45 = 72,181.53 : x
  2. Step 2: Convert to fraction form
    178,825.12/268,178.45 = 72,181.53/x
  3. Step 3: Cross multiply
    178,825.12x = 268,178.45 × 72,181.53
  4. Step 4: Simplify right side
    178,825.12x = 19,357,530,473.12
  5. Step 5: Solve for x
    x = 19,357,530,473.12/178,825.12
  6. Step 6: Final answer
    x = 108,248.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.