Home / 221,069.21-305,066.57-135,172.89

Finding the Fourth Proportional to 221,069.21, 305,066.57 and 135,172.89

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Solution

The fourth proportional to 221,069.21, 305,066.57 and 135,172.89 is: 186,533.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,069.21 : 305,066.57 = 135,172.89 : x
  2. Step 2: Convert to fraction form
    221,069.21/305,066.57 = 135,172.89/x
  3. Step 3: Cross multiply
    221,069.21x = 305,066.57 × 135,172.89
  4. Step 4: Simplify right side
    221,069.21x = 41,236,729,233.42
  5. Step 5: Solve for x
    x = 41,236,729,233.42/221,069.21
  6. Step 6: Final answer
    x = 186,533.12

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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.