Home / 78,198.90-117,298.53-19,034.46

Finding the Fourth Proportional to 78,198.90, 117,298.53 and 19,034.46

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Solution

The fourth proportional to 78,198.90, 117,298.53 and 19,034.46 is: 28,551.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,198.90 : 117,298.53 = 19,034.46 : x
  2. Step 2: Convert to fraction form
    78,198.90/117,298.53 = 19,034.46/x
  3. Step 3: Cross multiply
    78,198.90x = 117,298.53 × 19,034.46
  4. Step 4: Simplify right side
    78,198.90x = 2,232,714,177.34
  5. Step 5: Solve for x
    x = 2,232,714,177.34/78,198.90
  6. Step 6: Final answer
    x = 28,551.73

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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.