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Finding the Fourth Proportional to 223,061.65, 307,825.32 and 121,087.06

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Solution

The fourth proportional to 223,061.65, 307,825.32 and 121,087.06 is: 167,100.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,061.65 : 307,825.32 = 121,087.06 : x
  2. Step 2: Convert to fraction form
    223,061.65/307,825.32 = 121,087.06/x
  3. Step 3: Cross multiply
    223,061.65x = 307,825.32 × 121,087.06
  4. Step 4: Simplify right side
    223,061.65x = 37,273,662,992.36
  5. Step 5: Solve for x
    x = 37,273,662,992.36/223,061.65
  6. Step 6: Final answer
    x = 167,100.27

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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.