Home / 121,287.53-181,964.10-68,733.92

Finding the Fourth Proportional to 121,287.53, 181,964.10 and 68,733.92

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Solution

The fourth proportional to 121,287.53, 181,964.10 and 68,733.92 is: 103,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287.53 : 181,964.10 = 68,733.92 : x
  2. Step 2: Convert to fraction form
    121,287.53/181,964.10 = 68,733.92/x
  3. Step 3: Cross multiply
    121,287.53x = 181,964.10 × 68,733.92
  4. Step 4: Simplify right side
    121,287.53x = 12,507,104,982.45
  5. Step 5: Solve for x
    x = 12,507,104,982.45/121,287.53
  6. Step 6: Final answer
    x = 103,119.47

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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.