Home / 98,144.40-135,439.92-55,703.64

Finding the Fourth Proportional to 98,144.40, 135,439.92 and 55,703.64

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Solution

The fourth proportional to 98,144.40, 135,439.92 and 55,703.64 is: 76,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,144.40 : 135,439.92 = 55,703.64 : x
  2. Step 2: Convert to fraction form
    98,144.40/135,439.92 = 55,703.64/x
  3. Step 3: Cross multiply
    98,144.40x = 135,439.92 × 55,703.64
  4. Step 4: Simplify right side
    98,144.40x = 7,544,496,545.31
  5. Step 5: Solve for x
    x = 7,544,496,545.31/98,144.40
  6. Step 6: Final answer
    x = 76,871.39

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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.