Home / 90,834.91-136,252.41-43,438.80

Finding the Fourth Proportional to 90,834.91, 136,252.41 and 43,438.80

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Solution

The fourth proportional to 90,834.91, 136,252.41 and 43,438.80 is: 65,158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,834.91 : 136,252.41 = 43,438.80 : x
  2. Step 2: Convert to fraction form
    90,834.91/136,252.41 = 43,438.80/x
  3. Step 3: Cross multiply
    90,834.91x = 136,252.41 × 43,438.80
  4. Step 4: Simplify right side
    90,834.91x = 5,918,641,187.51
  5. Step 5: Solve for x
    x = 5,918,641,187.51/90,834.91
  6. Step 6: Final answer
    x = 65,158.22

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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.