Home / 214,047.72-321,075.18-80,990.64

Finding the Fourth Proportional to 214,047.72, 321,075.18 and 80,990.64

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Solution

The fourth proportional to 214,047.72, 321,075.18 and 80,990.64 is: 121,487.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,047.72 : 321,075.18 = 80,990.64 : x
  2. Step 2: Convert to fraction form
    214,047.72/321,075.18 = 80,990.64/x
  3. Step 3: Cross multiply
    214,047.72x = 321,075.18 × 80,990.64
  4. Step 4: Simplify right side
    214,047.72x = 26,004,084,316.32
  5. Step 5: Solve for x
    x = 26,004,084,316.32/214,047.72
  6. Step 6: Final answer
    x = 121,487.32

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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.