Home / 98,720.84-136,231.26-55,713.90

Finding the Fourth Proportional to 98,720.84, 136,231.26 and 55,713.90

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Solution

The fourth proportional to 98,720.84, 136,231.26 and 55,713.90 is: 76,883.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,720.84 : 136,231.26 = 55,713.90 : x
  2. Step 2: Convert to fraction form
    98,720.84/136,231.26 = 55,713.90/x
  3. Step 3: Cross multiply
    98,720.84x = 136,231.26 × 55,713.90
  4. Step 4: Simplify right side
    98,720.84x = 7,589,974,796.51
  5. Step 5: Solve for x
    x = 7,589,974,796.51/98,720.84
  6. Step 6: Final answer
    x = 76,883.21

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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.