Home / 98,868.82-136,447.38-55,856.21

Finding the Fourth Proportional to 98,868.82, 136,447.38 and 55,856.21

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Solution

The fourth proportional to 98,868.82, 136,447.38 and 55,856.21 is: 77,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,868.82 : 136,447.38 = 55,856.21 : x
  2. Step 2: Convert to fraction form
    98,868.82/136,447.38 = 55,856.21/x
  3. Step 3: Cross multiply
    98,868.82x = 136,447.38 × 55,856.21
  4. Step 4: Simplify right side
    98,868.82x = 7,621,434,100.68
  5. Step 5: Solve for x
    x = 7,621,434,100.68/98,868.82
  6. Step 6: Final answer
    x = 77,086.32

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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.