Home / 99,447.08-137,229.32-63,145.85

Finding the Fourth Proportional to 99,447.08, 137,229.32 and 63,145.85

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Solution

The fourth proportional to 99,447.08, 137,229.32 and 63,145.85 is: 87,136.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,447.08 : 137,229.32 = 63,145.85 : x
  2. Step 2: Convert to fraction form
    99,447.08/137,229.32 = 63,145.85/x
  3. Step 3: Cross multiply
    99,447.08x = 137,229.32 × 63,145.85
  4. Step 4: Simplify right side
    99,447.08x = 8,665,461,528.04
  5. Step 5: Solve for x
    x = 8,665,461,528.04/99,447.08
  6. Step 6: Final answer
    x = 87,136.41

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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.