Home / 121,132.60-181,439.70-107,999.80

Finding the Fourth Proportional to 121,132.60, 181,439.70 and 107,999.80

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Solution

The fourth proportional to 121,132.60, 181,439.70 and 107,999.80 is: 161,768.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,132.60 : 181,439.70 = 107,999.80 : x
  2. Step 2: Convert to fraction form
    121,132.60/181,439.70 = 107,999.80/x
  3. Step 3: Cross multiply
    121,132.60x = 181,439.70 × 107,999.80
  4. Step 4: Simplify right side
    121,132.60x = 19,595,451,312.06
  5. Step 5: Solve for x
    x = 19,595,451,312.06/121,132.60
  6. Step 6: Final answer
    x = 161,768.60

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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.