Home / 121,036.20-181,335.60-98,728.80

Finding the Fourth Proportional to 121,036.20, 181,335.60 and 98,728.80

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Solution

The fourth proportional to 121,036.20, 181,335.60 and 98,728.80 is: 147,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,036.20 : 181,335.60 = 98,728.80 : x
  2. Step 2: Convert to fraction form
    121,036.20/181,335.60 = 98,728.80/x
  3. Step 3: Cross multiply
    121,036.20x = 181,335.60 × 98,728.80
  4. Step 4: Simplify right side
    121,036.20x = 17,903,046,185.28
  5. Step 5: Solve for x
    x = 17,903,046,185.28/121,036.20
  6. Step 6: Final answer
    x = 147,914.81

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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.