Home / 206,132.96-308,755.08-139,205.06

Finding the Fourth Proportional to 206,132.96, 308,755.08 and 139,205.06

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Solution

The fourth proportional to 206,132.96, 308,755.08 and 139,205.06 is: 208,507.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,132.96 : 308,755.08 = 139,205.06 : x
  2. Step 2: Convert to fraction form
    206,132.96/308,755.08 = 139,205.06/x
  3. Step 3: Cross multiply
    206,132.96x = 308,755.08 × 139,205.06
  4. Step 4: Simplify right side
    206,132.96x = 42,980,269,436.70
  5. Step 5: Solve for x
    x = 42,980,269,436.70/206,132.96
  6. Step 6: Final answer
    x = 208,507.51

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1.5x scale

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.