Home / 146,129.20-219,042.60-79,428.40

Finding the Fourth Proportional to 146,129.20, 219,042.60 and 79,428.40

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Solution

The fourth proportional to 146,129.20, 219,042.60 and 79,428.40 is: 119,060.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,129.20 : 219,042.60 = 79,428.40 : x
  2. Step 2: Convert to fraction form
    146,129.20/219,042.60 = 79,428.40/x
  3. Step 3: Cross multiply
    146,129.20x = 219,042.60 × 79,428.40
  4. Step 4: Simplify right side
    146,129.20x = 17,398,203,249.84
  5. Step 5: Solve for x
    x = 17,398,203,249.84/146,129.20
  6. Step 6: Final answer
    x = 119,060.42

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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.