Home / 90,723.80-136,107.30-38,106.20

Finding the Fourth Proportional to 90,723.80, 136,107.30 and 38,106.20

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Solution

The fourth proportional to 90,723.80, 136,107.30 and 38,106.20 is: 57,168.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,723.80 : 136,107.30 = 38,106.20 : x
  2. Step 2: Convert to fraction form
    90,723.80/136,107.30 = 38,106.20/x
  3. Step 3: Cross multiply
    90,723.80x = 136,107.30 × 38,106.20
  4. Step 4: Simplify right side
    90,723.80x = 5,186,531,995.26
  5. Step 5: Solve for x
    x = 5,186,531,995.26/90,723.80
  6. Step 6: Final answer
    x = 57,168.37

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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.