Home / 189,410.18-261,387.60-103,369.86

Finding the Fourth Proportional to 189,410.18, 261,387.60 and 103,369.86

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Solution

The fourth proportional to 189,410.18, 261,387.60 and 103,369.86 is: 142,651.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,410.18 : 261,387.60 = 103,369.86 : x
  2. Step 2: Convert to fraction form
    189,410.18/261,387.60 = 103,369.86/x
  3. Step 3: Cross multiply
    189,410.18x = 261,387.60 × 103,369.86
  4. Step 4: Simplify right side
    189,410.18x = 27,019,599,617.74
  5. Step 5: Solve for x
    x = 27,019,599,617.74/189,410.18
  6. Step 6: Final answer
    x = 142,651.26

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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.