Home / 205,372.16-307,308.89-121,172.66

Finding the Fourth Proportional to 205,372.16, 307,308.89 and 121,172.66

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Solution

The fourth proportional to 205,372.16, 307,308.89 and 121,172.66 is: 181,316.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,372.16 : 307,308.89 = 121,172.66 : x
  2. Step 2: Convert to fraction form
    205,372.16/307,308.89 = 121,172.66/x
  3. Step 3: Cross multiply
    205,372.16x = 307,308.89 × 121,172.66
  4. Step 4: Simplify right side
    205,372.16x = 37,237,434,880.15
  5. Step 5: Solve for x
    x = 37,237,434,880.15/205,372.16
  6. Step 6: Final answer
    x = 181,316.86

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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.