Home / 89,081.40-133,622.10-81,823.80

Finding the Fourth Proportional to 89,081.40, 133,622.10 and 81,823.80

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Solution

The fourth proportional to 89,081.40, 133,622.10 and 81,823.80 is: 122,735.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,081.40 : 133,622.10 = 81,823.80 : x
  2. Step 2: Convert to fraction form
    89,081.40/133,622.10 = 81,823.80/x
  3. Step 3: Cross multiply
    89,081.40x = 133,622.10 × 81,823.80
  4. Step 4: Simplify right side
    89,081.40x = 10,933,467,985.98
  5. Step 5: Solve for x
    x = 10,933,467,985.98/89,081.40
  6. Step 6: Final answer
    x = 122,735.70

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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.