Home / 81,946.60-122,790.30-68,727.40

Finding the Fourth Proportional to 81,946.60, 122,790.30 and 68,727.40

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Solution

The fourth proportional to 81,946.60, 122,790.30 and 68,727.40 is: 102,982.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,946.60 : 122,790.30 = 68,727.40 : x
  2. Step 2: Convert to fraction form
    81,946.60/122,790.30 = 68,727.40/x
  3. Step 3: Cross multiply
    81,946.60x = 122,790.30 × 68,727.40
  4. Step 4: Simplify right side
    81,946.60x = 8,439,058,064.22
  5. Step 5: Solve for x
    x = 8,439,058,064.22/81,946.60
  6. Step 6: Final answer
    x = 102,982.41

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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.