Home / 223,949.42-309,056.05-121,978.74

Finding the Fourth Proportional to 223,949.42, 309,056.05 and 121,978.74

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Solution

The fourth proportional to 223,949.42, 309,056.05 and 121,978.74 is: 168,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,949.42 : 309,056.05 = 121,978.74 : x
  2. Step 2: Convert to fraction form
    223,949.42/309,056.05 = 121,978.74/x
  3. Step 3: Cross multiply
    223,949.42x = 309,056.05 × 121,978.74
  4. Step 4: Simplify right side
    223,949.42x = 37,698,266,958.48
  5. Step 5: Solve for x
    x = 37,698,266,958.48/223,949.42
  6. Step 6: Final answer
    x = 168,333.85

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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.