Home / 281,010.20-421,409.51-91,420.97

Finding the Fourth Proportional to 281,010.20, 421,409.51 and 91,420.97

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Solution

The fourth proportional to 281,010.20, 421,409.51 and 91,420.97 is: 137,097.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,010.20 : 421,409.51 = 91,420.97 : x
  2. Step 2: Convert to fraction form
    281,010.20/421,409.51 = 91,420.97/x
  3. Step 3: Cross multiply
    281,010.20x = 421,409.51 × 91,420.97
  4. Step 4: Simplify right side
    281,010.20x = 38,525,665,714.32
  5. Step 5: Solve for x
    x = 38,525,665,714.32/281,010.20
  6. Step 6: Final answer
    x = 137,097.04

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1.5x scale

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.