Home / 100,460.91-138,643.18-66,410.23

Finding the Fourth Proportional to 100,460.91, 138,643.18 and 66,410.23

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Solution

The fourth proportional to 100,460.91, 138,643.18 and 66,410.23 is: 91,650.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,460.91 : 138,643.18 = 66,410.23 : x
  2. Step 2: Convert to fraction form
    100,460.91/138,643.18 = 66,410.23/x
  3. Step 3: Cross multiply
    100,460.91x = 138,643.18 × 66,410.23
  4. Step 4: Simplify right side
    100,460.91x = 9,207,325,471.73
  5. Step 5: Solve for x
    x = 9,207,325,471.73/100,460.91
  6. Step 6: Final answer
    x = 91,650.83

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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.