Home / 98,143.13-135,439.34-55,704.39

Finding the Fourth Proportional to 98,143.13, 135,439.34 and 55,704.39

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Solution

The fourth proportional to 98,143.13, 135,439.34 and 55,704.39 is: 76,873.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,143.13 : 135,439.34 = 55,704.39 : x
  2. Step 2: Convert to fraction form
    98,143.13/135,439.34 = 55,704.39/x
  3. Step 3: Cross multiply
    98,143.13x = 135,439.34 × 55,704.39
  4. Step 4: Simplify right side
    98,143.13x = 7,544,565,538.18
  5. Step 5: Solve for x
    x = 7,544,565,538.18/98,143.13
  6. Step 6: Final answer
    x = 76,873.09

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1.5x scale

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.