Home / 178,764.16-268,142.76-72,145.28

Finding the Fourth Proportional to 178,764.16, 268,142.76 and 72,145.28

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Solution

The fourth proportional to 178,764.16, 268,142.76 and 72,145.28 is: 108,216.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,764.16 : 268,142.76 = 72,145.28 : x
  2. Step 2: Convert to fraction form
    178,764.16/268,142.76 = 72,145.28/x
  3. Step 3: Cross multiply
    178,764.16x = 268,142.76 × 72,145.28
  4. Step 4: Simplify right side
    178,764.16x = 19,345,234,500.17
  5. Step 5: Solve for x
    x = 19,345,234,500.17/178,764.16
  6. Step 6: Final answer
    x = 108,216.52

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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.