Home / 210,921.30-291,026.39-124,907.31

Finding the Fourth Proportional to 210,921.30, 291,026.39 and 124,907.31

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Solution

The fourth proportional to 210,921.30, 291,026.39 and 124,907.31 is: 172,345.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,921.30 : 291,026.39 = 124,907.31 : x
  2. Step 2: Convert to fraction form
    210,921.30/291,026.39 = 124,907.31/x
  3. Step 3: Cross multiply
    210,921.30x = 291,026.39 × 124,907.31
  4. Step 4: Simplify right side
    210,921.30x = 36,351,322,889.37
  5. Step 5: Solve for x
    x = 36,351,322,889.37/210,921.30
  6. Step 6: Final answer
    x = 172,345.43

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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.