Home / 153,995.54-212,517.33-90,379.22

Finding the Fourth Proportional to 153,995.54, 212,517.33 and 90,379.22

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Solution

The fourth proportional to 153,995.54, 212,517.33 and 90,379.22 is: 124,725.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,995.54 : 212,517.33 = 90,379.22 : x
  2. Step 2: Convert to fraction form
    153,995.54/212,517.33 = 90,379.22/x
  3. Step 3: Cross multiply
    153,995.54x = 212,517.33 × 90,379.22
  4. Step 4: Simplify right side
    153,995.54x = 19,207,150,521.88
  5. Step 5: Solve for x
    x = 19,207,150,521.88/153,995.54
  6. Step 6: Final answer
    x = 124,725.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.