Home / 78,194.18-117,290.28-19,029.98

Finding the Fourth Proportional to 78,194.18, 117,290.28 and 19,029.98

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Solution

The fourth proportional to 78,194.18, 117,290.28 and 19,029.98 is: 28,544.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,194.18 : 117,290.28 = 19,029.98 : x
  2. Step 2: Convert to fraction form
    78,194.18/117,290.28 = 19,029.98/x
  3. Step 3: Cross multiply
    78,194.18x = 117,290.28 × 19,029.98
  4. Step 4: Simplify right side
    78,194.18x = 2,232,031,682.59
  5. Step 5: Solve for x
    x = 2,232,031,682.59/78,194.18
  6. Step 6: Final answer
    x = 28,544.73

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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.