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Finding the Fourth Proportional to 121,920.37, 167,876.27 and 106,728.01

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Solution

The fourth proportional to 121,920.37, 167,876.27 and 106,728.01 is: 146,957.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,920.37 : 167,876.27 = 106,728.01 : x
  2. Step 2: Convert to fraction form
    121,920.37/167,876.27 = 106,728.01/x
  3. Step 3: Cross multiply
    121,920.37x = 167,876.27 × 106,728.01
  4. Step 4: Simplify right side
    121,920.37x = 17,917,100,223.32
  5. Step 5: Solve for x
    x = 17,917,100,223.32/121,920.37
  6. Step 6: Final answer
    x = 146,957.40

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