Home / 121,208.40-181,812.60-68,582.16

Finding the Fourth Proportional to 121,208.40, 181,812.60 and 68,582.16

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Solution

The fourth proportional to 121,208.40, 181,812.60 and 68,582.16 is: 102,873.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,208.40 : 181,812.60 = 68,582.16 : x
  2. Step 2: Convert to fraction form
    121,208.40/181,812.60 = 68,582.16/x
  3. Step 3: Cross multiply
    121,208.40x = 181,812.60 × 68,582.16
  4. Step 4: Simplify right side
    121,208.40x = 12,469,100,823.22
  5. Step 5: Solve for x
    x = 12,469,100,823.22/121,208.40
  6. Step 6: Final answer
    x = 102,873.24

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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.