Home / 159,131.55-219,607.32-91,161.66

Finding the Fourth Proportional to 159,131.55, 219,607.32 and 91,161.66

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Solution

The fourth proportional to 159,131.55, 219,607.32 and 91,161.66 is: 125,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,131.55 : 219,607.32 = 91,161.66 : x
  2. Step 2: Convert to fraction form
    159,131.55/219,607.32 = 91,161.66/x
  3. Step 3: Cross multiply
    159,131.55x = 219,607.32 × 91,161.66
  4. Step 4: Simplify right side
    159,131.55x = 20,019,767,383.54
  5. Step 5: Solve for x
    x = 20,019,767,383.54/159,131.55
  6. Step 6: Final answer
    x = 125,806.40

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1.5x scale

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.