Home / 90,834.20-136,154.10-40,905.80

Finding the Fourth Proportional to 90,834.20, 136,154.10 and 40,905.80

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Solution

The fourth proportional to 90,834.20, 136,154.10 and 40,905.80 is: 61,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,834.20 : 136,154.10 = 40,905.80 : x
  2. Step 2: Convert to fraction form
    90,834.20/136,154.10 = 40,905.80/x
  3. Step 3: Cross multiply
    90,834.20x = 136,154.10 × 40,905.80
  4. Step 4: Simplify right side
    90,834.20x = 5,569,492,383.78
  5. Step 5: Solve for x
    x = 5,569,492,383.78/90,834.20
  6. Step 6: Final answer
    x = 61,314.93

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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.