Home / 281,009.09-421,180.56-130,938.68

Finding the Fourth Proportional to 281,009.09, 421,180.56 and 130,938.68

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Solution

The fourth proportional to 281,009.09, 421,180.56 and 130,938.68 is: 196,252.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,009.09 : 421,180.56 = 130,938.68 : x
  2. Step 2: Convert to fraction form
    281,009.09/421,180.56 = 130,938.68/x
  3. Step 3: Cross multiply
    281,009.09x = 421,180.56 × 130,938.68
  4. Step 4: Simplify right side
    281,009.09x = 55,148,824,462.16
  5. Step 5: Solve for x
    x = 55,148,824,462.16/281,009.09
  6. Step 6: Final answer
    x = 196,252.82

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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.