Home / 90,786.20-136,325.10-68,624.60

Finding the Fourth Proportional to 90,786.20, 136,325.10 and 68,624.60

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Solution

The fourth proportional to 90,786.20, 136,325.10 and 68,624.60 is: 103,047.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,786.20 : 136,325.10 = 68,624.60 : x
  2. Step 2: Convert to fraction form
    90,786.20/136,325.10 = 68,624.60/x
  3. Step 3: Cross multiply
    90,786.20x = 136,325.10 × 68,624.60
  4. Step 4: Simplify right side
    90,786.20x = 9,355,255,457.46
  5. Step 5: Solve for x
    x = 9,355,255,457.46/90,786.20
  6. Step 6: Final answer
    x = 103,047.11

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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.