Home / 74,115.21-111,172.44-17,955.32

Finding the Fourth Proportional to 74,115.21, 111,172.44 and 17,955.32

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Solution

The fourth proportional to 74,115.21, 111,172.44 and 17,955.32 is: 26,932.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,115.21 : 111,172.44 = 17,955.32 : x
  2. Step 2: Convert to fraction form
    74,115.21/111,172.44 = 17,955.32/x
  3. Step 3: Cross multiply
    74,115.21x = 111,172.44 × 17,955.32
  4. Step 4: Simplify right side
    74,115.21x = 1,996,136,872.20
  5. Step 5: Solve for x
    x = 1,996,136,872.20/74,115.21
  6. Step 6: Final answer
    x = 26,932.89

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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.