Home / 99,819.16-149,735.93-31,424.85

Finding the Fourth Proportional to 99,819.16, 149,735.93 and 31,424.85

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Solution

The fourth proportional to 99,819.16, 149,735.93 and 31,424.85 is: 47,139.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,819.16 : 149,735.93 = 31,424.85 : x
  2. Step 2: Convert to fraction form
    99,819.16/149,735.93 = 31,424.85/x
  3. Step 3: Cross multiply
    99,819.16x = 149,735.93 × 31,424.85
  4. Step 4: Simplify right side
    99,819.16x = 4,705,428,982.74
  5. Step 5: Solve for x
    x = 4,705,428,982.74/99,819.16
  6. Step 6: Final answer
    x = 47,139.54

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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.