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Finding the Fourth Proportional to 189,060.74, 260,728.51 and 137,992.62

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Solution

The fourth proportional to 189,060.74, 260,728.51 and 137,992.62 is: 190,301.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,060.74 : 260,728.51 = 137,992.62 : x
  2. Step 2: Convert to fraction form
    189,060.74/260,728.51 = 137,992.62/x
  3. Step 3: Cross multiply
    189,060.74x = 260,728.51 × 137,992.62
  4. Step 4: Simplify right side
    189,060.74x = 35,978,610,203.60
  5. Step 5: Solve for x
    x = 35,978,610,203.60/189,060.74
  6. Step 6: Final answer
    x = 190,301.86

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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.