Home / 172,330.11-258,495.26-78,770.25

Finding the Fourth Proportional to 172,330.11, 258,495.26 and 78,770.25

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Solution

The fourth proportional to 172,330.11, 258,495.26 and 78,770.25 is: 118,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,330.11 : 258,495.26 = 78,770.25 : x
  2. Step 2: Convert to fraction form
    172,330.11/258,495.26 = 78,770.25/x
  3. Step 3: Cross multiply
    172,330.11x = 258,495.26 × 78,770.25
  4. Step 4: Simplify right side
    172,330.11x = 20,361,735,860.16
  5. Step 5: Solve for x
    x = 20,361,735,860.16/172,330.11
  6. Step 6: Final answer
    x = 118,155.42

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1.5x scale

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.