Home / 154,052.38-213,064.80-138,131.02

Finding the Fourth Proportional to 154,052.38, 213,064.80 and 138,131.02

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Solution

The fourth proportional to 154,052.38, 213,064.80 and 138,131.02 is: 191,044.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,052.38 : 213,064.80 = 138,131.02 : x
  2. Step 2: Convert to fraction form
    154,052.38/213,064.80 = 138,131.02/x
  3. Step 3: Cross multiply
    154,052.38x = 213,064.80 × 138,131.02
  4. Step 4: Simplify right side
    154,052.38x = 29,430,858,150.10
  5. Step 5: Solve for x
    x = 29,430,858,150.10/154,052.38
  6. Step 6: Final answer
    x = 191,044.49

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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.