Home / 115,930.28-173,638.52-89,078.60

Finding the Fourth Proportional to 115,930.28, 173,638.52 and 89,078.60

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Solution

The fourth proportional to 115,930.28, 173,638.52 and 89,078.60 is: 133,420.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,930.28 : 173,638.52 = 89,078.60 : x
  2. Step 2: Convert to fraction form
    115,930.28/173,638.52 = 89,078.60/x
  3. Step 3: Cross multiply
    115,930.28x = 173,638.52 × 89,078.60
  4. Step 4: Simplify right side
    115,930.28x = 15,467,476,267.67
  5. Step 5: Solve for x
    x = 15,467,476,267.67/115,930.28
  6. Step 6: Final answer
    x = 133,420.50

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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.