Home / 112,129.56-168,194.34-76,962.60

Finding the Fourth Proportional to 112,129.56, 168,194.34 and 76,962.60

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Solution

The fourth proportional to 112,129.56, 168,194.34 and 76,962.60 is: 115,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,129.56 : 168,194.34 = 76,962.60 : x
  2. Step 2: Convert to fraction form
    112,129.56/168,194.34 = 76,962.60/x
  3. Step 3: Cross multiply
    112,129.56x = 168,194.34 × 76,962.60
  4. Step 4: Simplify right side
    112,129.56x = 12,944,672,913.95
  5. Step 5: Solve for x
    x = 12,944,672,913.95/112,129.56
  6. Step 6: Final answer
    x = 115,443.90

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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.