Home / 74,171.78-111,256.52-18,012.32

Finding the Fourth Proportional to 74,171.78, 111,256.52 and 18,012.32

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Solution

The fourth proportional to 74,171.78, 111,256.52 and 18,012.32 is: 27,018.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,171.78 : 111,256.52 = 18,012.32 : x
  2. Step 2: Convert to fraction form
    74,171.78/111,256.52 = 18,012.32/x
  3. Step 3: Cross multiply
    74,171.78x = 111,256.52 × 18,012.32
  4. Step 4: Simplify right side
    74,171.78x = 2,003,988,040.33
  5. Step 5: Solve for x
    x = 2,003,988,040.33/74,171.78
  6. Step 6: Final answer
    x = 27,018.20

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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.