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Finding the Fourth Proportional to 135,374.56, 186,814.56 and 74,943.92

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Solution

The fourth proportional to 135,374.56, 186,814.56 and 74,943.92 is: 103,421.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,374.56 : 186,814.56 = 74,943.92 : x
  2. Step 2: Convert to fraction form
    135,374.56/186,814.56 = 74,943.92/x
  3. Step 3: Cross multiply
    135,374.56x = 186,814.56 × 74,943.92
  4. Step 4: Simplify right side
    135,374.56x = 14,000,615,439.48
  5. Step 5: Solve for x
    x = 14,000,615,439.48/135,374.56
  6. Step 6: Final answer
    x = 103,421.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.