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Finding the Fourth Proportional to 189,028.31, 260,859.08 and 104,144.63

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Solution

The fourth proportional to 189,028.31, 260,859.08 and 104,144.63 is: 143,719.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,028.31 : 260,859.08 = 104,144.63 : x
  2. Step 2: Convert to fraction form
    189,028.31/260,859.08 = 104,144.63/x
  3. Step 3: Cross multiply
    189,028.31x = 260,859.08 × 104,144.63
  4. Step 4: Simplify right side
    189,028.31x = 27,167,071,324.81
  5. Step 5: Solve for x
    x = 27,167,071,324.81/189,028.31
  6. Step 6: Final answer
    x = 143,719.59

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1.5x scale

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.