Home / 216,534.09-324,780.18-66,734.16

Finding the Fourth Proportional to 216,534.09, 324,780.18 and 66,734.16

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Solution

The fourth proportional to 216,534.09, 324,780.18 and 66,734.16 is: 100,094.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,534.09 : 324,780.18 = 66,734.16 : x
  2. Step 2: Convert to fraction form
    216,534.09/324,780.18 = 66,734.16/x
  3. Step 3: Cross multiply
    216,534.09x = 324,780.18 × 66,734.16
  4. Step 4: Simplify right side
    216,534.09x = 21,673,932,496.95
  5. Step 5: Solve for x
    x = 21,673,932,496.95/216,534.09
  6. Step 6: Final answer
    x = 100,094.78

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1.5x scale

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.