Home / 121,665.20-167,804.64-73,216.62

Finding the Fourth Proportional to 121,665.20, 167,804.64 and 73,216.62

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Solution

The fourth proportional to 121,665.20, 167,804.64 and 73,216.62 is: 100,982.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,665.20 : 167,804.64 = 73,216.62 : x
  2. Step 2: Convert to fraction form
    121,665.20/167,804.64 = 73,216.62/x
  3. Step 3: Cross multiply
    121,665.20x = 167,804.64 × 73,216.62
  4. Step 4: Simplify right side
    121,665.20x = 12,286,088,561.12
  5. Step 5: Solve for x
    x = 12,286,088,561.12/121,665.20
  6. Step 6: Final answer
    x = 100,982.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.