Home / 223,968.76-309,078.71-121,994.62

Finding the Fourth Proportional to 223,968.76, 309,078.71 and 121,994.62

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Solution

The fourth proportional to 223,968.76, 309,078.71 and 121,994.62 is: 168,353.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,968.76 : 309,078.71 = 121,994.62 : x
  2. Step 2: Convert to fraction form
    223,968.76/309,078.71 = 121,994.62/x
  3. Step 3: Cross multiply
    223,968.76x = 309,078.71 × 121,994.62
  4. Step 4: Simplify right side
    223,968.76x = 37,705,939,776.54
  5. Step 5: Solve for x
    x = 37,705,939,776.54/223,968.76
  6. Step 6: Final answer
    x = 168,353.57

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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.