Home / 213,579.80-320,336.07-71,423.98

Finding the Fourth Proportional to 213,579.80, 320,336.07 and 71,423.98

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Solution

The fourth proportional to 213,579.80, 320,336.07 and 71,423.98 is: 107,124.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,579.80 : 320,336.07 = 71,423.98 : x
  2. Step 2: Convert to fraction form
    213,579.80/320,336.07 = 71,423.98/x
  3. Step 3: Cross multiply
    213,579.80x = 320,336.07 × 71,423.98
  4. Step 4: Simplify right side
    213,579.80x = 22,879,677,056.96
  5. Step 5: Solve for x
    x = 22,879,677,056.96/213,579.80
  6. Step 6: Final answer
    x = 107,124.72

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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.