Home / 121,185.40-181,778.10-83,860.60

Finding the Fourth Proportional to 121,185.40, 181,778.10 and 83,860.60

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Solution

The fourth proportional to 121,185.40, 181,778.10 and 83,860.60 is: 125,790.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,185.40 : 181,778.10 = 83,860.60 : x
  2. Step 2: Convert to fraction form
    121,185.40/181,778.10 = 83,860.60/x
  3. Step 3: Cross multiply
    121,185.40x = 181,778.10 × 83,860.60
  4. Step 4: Simplify right side
    121,185.40x = 15,244,020,532.86
  5. Step 5: Solve for x
    x = 15,244,020,532.86/121,185.40
  6. Step 6: Final answer
    x = 125,790.90

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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.