Home / 213,518.46-320,168.75-71,312.52

Finding the Fourth Proportional to 213,518.46, 320,168.75 and 71,312.52

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Solution

The fourth proportional to 213,518.46, 320,168.75 and 71,312.52 is: 106,932.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,518.46 : 320,168.75 = 71,312.52 : x
  2. Step 2: Convert to fraction form
    213,518.46/320,168.75 = 71,312.52/x
  3. Step 3: Cross multiply
    213,518.46x = 320,168.75 × 71,312.52
  4. Step 4: Simplify right side
    213,518.46x = 22,832,040,031.19
  5. Step 5: Solve for x
    x = 22,832,040,031.19/213,518.46
  6. Step 6: Final answer
    x = 106,932.39

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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.