Home / 85,218.58-117,712.93-69,145.95

Finding the Fourth Proportional to 85,218.58, 117,712.93 and 69,145.95

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Solution

The fourth proportional to 85,218.58, 117,712.93 and 69,145.95 is: 95,511.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,218.58 : 117,712.93 = 69,145.95 : x
  2. Step 2: Convert to fraction form
    85,218.58/117,712.93 = 69,145.95/x
  3. Step 3: Cross multiply
    85,218.58x = 117,712.93 × 69,145.95
  4. Step 4: Simplify right side
    85,218.58x = 8,139,372,372.13
  5. Step 5: Solve for x
    x = 8,139,372,372.13/85,218.58
  6. Step 6: Final answer
    x = 95,511.72

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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.