Home / 216,705.12-325,088.77-66,958.48

Finding the Fourth Proportional to 216,705.12, 325,088.77 and 66,958.48

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Solution

The fourth proportional to 216,705.12, 325,088.77 and 66,958.48 is: 100,447.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,705.12 : 325,088.77 = 66,958.48 : x
  2. Step 2: Convert to fraction form
    216,705.12/325,088.77 = 66,958.48/x
  3. Step 3: Cross multiply
    216,705.12x = 325,088.77 × 66,958.48
  4. Step 4: Simplify right side
    216,705.12x = 21,767,449,904.27
  5. Step 5: Solve for x
    x = 21,767,449,904.27/216,705.12
  6. Step 6: Final answer
    x = 100,447.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.