Home / 100,271.30-138,437.31-64,523.44

Finding the Fourth Proportional to 100,271.30, 138,437.31 and 64,523.44

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Solution

The fourth proportional to 100,271.30, 138,437.31 and 64,523.44 is: 89,082.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,271.30 : 138,437.31 = 64,523.44 : x
  2. Step 2: Convert to fraction form
    100,271.30/138,437.31 = 64,523.44/x
  3. Step 3: Cross multiply
    100,271.30x = 138,437.31 × 64,523.44
  4. Step 4: Simplify right side
    100,271.30x = 8,932,450,773.36
  5. Step 5: Solve for x
    x = 8,932,450,773.36/100,271.30
  6. Step 6: Final answer
    x = 89,082.83

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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.