Home / 213,715.15-320,454.23-87,443.98

Finding the Fourth Proportional to 213,715.15, 320,454.23 and 87,443.98

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Solution

The fourth proportional to 213,715.15, 320,454.23 and 87,443.98 is: 131,117.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,715.15 : 320,454.23 = 87,443.98 : x
  2. Step 2: Convert to fraction form
    213,715.15/320,454.23 = 87,443.98/x
  3. Step 3: Cross multiply
    213,715.15x = 320,454.23 × 87,443.98
  4. Step 4: Simplify right side
    213,715.15x = 28,021,792,040.68
  5. Step 5: Solve for x
    x = 28,021,792,040.68/213,715.15
  6. Step 6: Final answer
    x = 131,117.48

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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.