Home / 98,133.12-135,419.04-55,685.88

Finding the Fourth Proportional to 98,133.12, 135,419.04 and 55,685.88

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Solution

The fourth proportional to 98,133.12, 135,419.04 and 55,685.88 is: 76,843.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,133.12 : 135,419.04 = 55,685.88 : x
  2. Step 2: Convert to fraction form
    98,133.12/135,419.04 = 55,685.88/x
  3. Step 3: Cross multiply
    98,133.12x = 135,419.04 × 55,685.88
  4. Step 4: Simplify right side
    98,133.12x = 7,540,928,411.16
  5. Step 5: Solve for x
    x = 7,540,928,411.16/98,133.12
  6. Step 6: Final answer
    x = 76,843.87

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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.