Home / 121,295.10-181,942.65-74,574.30

Finding the Fourth Proportional to 121,295.10, 181,942.65 and 74,574.30

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Solution

The fourth proportional to 121,295.10, 181,942.65 and 74,574.30 is: 111,861.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,295.10 : 181,942.65 = 74,574.30 : x
  2. Step 2: Convert to fraction form
    121,295.10/181,942.65 = 74,574.30/x
  3. Step 3: Cross multiply
    121,295.10x = 181,942.65 × 74,574.30
  4. Step 4: Simplify right side
    121,295.10x = 13,568,245,763.90
  5. Step 5: Solve for x
    x = 13,568,245,763.90/121,295.10
  6. Step 6: Final answer
    x = 111,861.45

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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.