Home / 281,120.15-421,679.86-91,580.19

Finding the Fourth Proportional to 281,120.15, 421,679.86 and 91,580.19

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Solution

The fourth proportional to 281,120.15, 421,679.86 and 91,580.19 is: 137,370.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,120.15 : 421,679.86 = 91,580.19 : x
  2. Step 2: Convert to fraction form
    281,120.15/421,679.86 = 91,580.19/x
  3. Step 3: Cross multiply
    281,120.15x = 421,679.86 × 91,580.19
  4. Step 4: Simplify right side
    281,120.15x = 38,617,519,887.72
  5. Step 5: Solve for x
    x = 38,617,519,887.72/281,120.15
  6. Step 6: Final answer
    x = 137,370.16

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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.