Home / 121,222.36-181,327.12-85,196.29

Finding the Fourth Proportional to 121,222.36, 181,327.12 and 85,196.29

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Solution

The fourth proportional to 121,222.36, 181,327.12 and 85,196.29 is: 127,438.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,222.36 : 181,327.12 = 85,196.29 : x
  2. Step 2: Convert to fraction form
    121,222.36/181,327.12 = 85,196.29/x
  3. Step 3: Cross multiply
    121,222.36x = 181,327.12 × 85,196.29
  4. Step 4: Simplify right side
    121,222.36x = 15,448,397,900.38
  5. Step 5: Solve for x
    x = 15,448,397,900.38/121,222.36
  6. Step 6: Final answer
    x = 127,438.52

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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.