Home / 120,509.28-166,300.80-66,061.08

Finding the Fourth Proportional to 120,509.28, 166,300.80 and 66,061.08

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Solution

The fourth proportional to 120,509.28, 166,300.80 and 66,061.08 is: 91,163.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,509.28 : 166,300.80 = 66,061.08 : x
  2. Step 2: Convert to fraction form
    120,509.28/166,300.80 = 66,061.08/x
  3. Step 3: Cross multiply
    120,509.28x = 166,300.80 × 66,061.08
  4. Step 4: Simplify right side
    120,509.28x = 10,986,010,452.86
  5. Step 5: Solve for x
    x = 10,986,010,452.86/120,509.28
  6. Step 6: Final answer
    x = 91,163.19

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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.