Home / 212,409.20-292,975.43-139,788.96

Finding the Fourth Proportional to 212,409.20, 292,975.43 and 139,788.96

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Solution

The fourth proportional to 212,409.20, 292,975.43 and 139,788.96 is: 192,810.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,409.20 : 292,975.43 = 139,788.96 : x
  2. Step 2: Convert to fraction form
    212,409.20/292,975.43 = 139,788.96/x
  3. Step 3: Cross multiply
    212,409.20x = 292,975.43 × 139,788.96
  4. Step 4: Simplify right side
    212,409.20x = 40,954,729,583.34
  5. Step 5: Solve for x
    x = 40,954,729,583.34/212,409.20
  6. Step 6: Final answer
    x = 192,810.52

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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.