Home / 99,941.70-149,183.38-87,330.26

Finding the Fourth Proportional to 99,941.70, 149,183.38 and 87,330.26

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Solution

The fourth proportional to 99,941.70, 149,183.38 and 87,330.26 is: 130,358.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,941.70 : 149,183.38 = 87,330.26 : x
  2. Step 2: Convert to fraction form
    99,941.70/149,183.38 = 87,330.26/x
  3. Step 3: Cross multiply
    99,941.70x = 149,183.38 × 87,330.26
  4. Step 4: Simplify right side
    99,941.70x = 13,028,223,363.08
  5. Step 5: Solve for x
    x = 13,028,223,363.08/99,941.70
  6. Step 6: Final answer
    x = 130,358.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.