Home / 165,129.72-227,880.18-89,678.22

Finding the Fourth Proportional to 165,129.72, 227,880.18 and 89,678.22

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Solution

The fourth proportional to 165,129.72, 227,880.18 and 89,678.22 is: 123,756.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,129.72 : 227,880.18 = 89,678.22 : x
  2. Step 2: Convert to fraction form
    165,129.72/227,880.18 = 89,678.22/x
  3. Step 3: Cross multiply
    165,129.72x = 227,880.18 × 89,678.22
  4. Step 4: Simplify right side
    165,129.72x = 20,435,888,915.68
  5. Step 5: Solve for x
    x = 20,435,888,915.68/165,129.72
  6. Step 6: Final answer
    x = 123,756.58

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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.