Home / 100,471.74-138,661.83-64,206.24

Finding the Fourth Proportional to 100,471.74, 138,661.83 and 64,206.24

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Solution

The fourth proportional to 100,471.74, 138,661.83 and 64,206.24 is: 88,611.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,471.74 : 138,661.83 = 64,206.24 : x
  2. Step 2: Convert to fraction form
    100,471.74/138,661.83 = 64,206.24/x
  3. Step 3: Cross multiply
    100,471.74x = 138,661.83 × 64,206.24
  4. Step 4: Simplify right side
    100,471.74x = 8,902,954,735.82
  5. Step 5: Solve for x
    x = 8,902,954,735.82/100,471.74
  6. Step 6: Final answer
    x = 88,611.53

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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.