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Finding the Fourth Proportional to 190,374.65, 262,836.44 and 122,509.54

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Solution

The fourth proportional to 190,374.65, 262,836.44 and 122,509.54 is: 169,140.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,374.65 : 262,836.44 = 122,509.54 : x
  2. Step 2: Convert to fraction form
    190,374.65/262,836.44 = 122,509.54/x
  3. Step 3: Cross multiply
    190,374.65x = 262,836.44 × 122,509.54
  4. Step 4: Simplify right side
    190,374.65x = 32,199,970,747.09
  5. Step 5: Solve for x
    x = 32,199,970,747.09/190,374.65
  6. Step 6: Final answer
    x = 169,140.01

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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.