Home / 189,062.13-260,902.38-103,021.72

Finding the Fourth Proportional to 189,062.13, 260,902.38 and 103,021.72

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Solution

The fourth proportional to 189,062.13, 260,902.38 and 103,021.72 is: 142,168.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,062.13 : 260,902.38 = 103,021.72 : x
  2. Step 2: Convert to fraction form
    189,062.13/260,902.38 = 103,021.72/x
  3. Step 3: Cross multiply
    189,062.13x = 260,902.38 × 103,021.72
  4. Step 4: Simplify right side
    189,062.13x = 26,878,611,879.49
  5. Step 5: Solve for x
    x = 26,878,611,879.49/189,062.13
  6. Step 6: Final answer
    x = 142,168.14

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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.