Home / 99,137.82-148,575.51-72,718.86

Finding the Fourth Proportional to 99,137.82, 148,575.51 and 72,718.86

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Solution

The fourth proportional to 99,137.82, 148,575.51 and 72,718.86 is: 108,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,137.82 : 148,575.51 = 72,718.86 : x
  2. Step 2: Convert to fraction form
    99,137.82/148,575.51 = 72,718.86/x
  3. Step 3: Cross multiply
    99,137.82x = 148,575.51 × 72,718.86
  4. Step 4: Simplify right side
    99,137.82x = 10,804,241,711.12
  5. Step 5: Solve for x
    x = 10,804,241,711.12/99,137.82
  6. Step 6: Final answer
    x = 108,982.04

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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.