Home / 189,126.31-260,992.64-103,085.29

Finding the Fourth Proportional to 189,126.31, 260,992.64 and 103,085.29

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Solution

The fourth proportional to 189,126.31, 260,992.64 and 103,085.29 is: 142,256.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,126.31 : 260,992.64 = 103,085.29 : x
  2. Step 2: Convert to fraction form
    189,126.31/260,992.64 = 103,085.29/x
  3. Step 3: Cross multiply
    189,126.31x = 260,992.64 × 103,085.29
  4. Step 4: Simplify right side
    189,126.31x = 26,904,500,518.28
  5. Step 5: Solve for x
    x = 26,904,500,518.28/189,126.31
  6. Step 6: Final answer
    x = 142,256.78

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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.