Home / 106,331.40-146,615.40-79,428.60

Finding the Fourth Proportional to 106,331.40, 146,615.40 and 79,428.60

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Solution

The fourth proportional to 106,331.40, 146,615.40 and 79,428.60 is: 109,520.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,331.40 : 146,615.40 = 79,428.60 : x
  2. Step 2: Convert to fraction form
    106,331.40/146,615.40 = 79,428.60/x
  3. Step 3: Cross multiply
    106,331.40x = 146,615.40 × 79,428.60
  4. Step 4: Simplify right side
    106,331.40x = 11,645,455,960.44
  5. Step 5: Solve for x
    x = 11,645,455,960.44/106,331.40
  6. Step 6: Final answer
    x = 109,520.39

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1.5x scale

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.