Home / 109,431.96-150,995.10-66,399.66

Finding the Fourth Proportional to 109,431.96, 150,995.10 and 66,399.66

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Solution

The fourth proportional to 109,431.96, 150,995.10 and 66,399.66 is: 91,618.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,431.96 : 150,995.10 = 66,399.66 : x
  2. Step 2: Convert to fraction form
    109,431.96/150,995.10 = 66,399.66/x
  3. Step 3: Cross multiply
    109,431.96x = 150,995.10 × 66,399.66
  4. Step 4: Simplify right side
    109,431.96x = 10,026,023,301.67
  5. Step 5: Solve for x
    x = 10,026,023,301.67/109,431.96
  6. Step 6: Final answer
    x = 91,618.79

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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.