Home / 146,643.57-202,459.85-100,782.21

Finding the Fourth Proportional to 146,643.57, 202,459.85 and 100,782.21

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Solution

The fourth proportional to 146,643.57, 202,459.85 and 100,782.21 is: 139,142.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,643.57 : 202,459.85 = 100,782.21 : x
  2. Step 2: Convert to fraction form
    146,643.57/202,459.85 = 100,782.21/x
  3. Step 3: Cross multiply
    146,643.57x = 202,459.85 × 100,782.21
  4. Step 4: Simplify right side
    146,643.57x = 20,404,351,119.27
  5. Step 5: Solve for x
    x = 20,404,351,119.27/146,643.57
  6. Step 6: Final answer
    x = 139,142.49

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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.