Home / 231,942.80-347,914.20-121,120.40

Finding the Fourth Proportional to 231,942.80, 347,914.20 and 121,120.40

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Solution

The fourth proportional to 231,942.80, 347,914.20 and 121,120.40 is: 181,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,942.80 : 347,914.20 = 121,120.40 : x
  2. Step 2: Convert to fraction form
    231,942.80/347,914.20 = 121,120.40/x
  3. Step 3: Cross multiply
    231,942.80x = 347,914.20 × 121,120.40
  4. Step 4: Simplify right side
    231,942.80x = 42,139,507,069.68
  5. Step 5: Solve for x
    x = 42,139,507,069.68/231,942.80
  6. Step 6: Final answer
    x = 181,680.60

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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.