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Finding the Fourth Proportional to 105,631.26, 145,771.12 and 60,919.26

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Solution

The fourth proportional to 105,631.26, 145,771.12 and 60,919.26 is: 84,068.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,631.26 : 145,771.12 = 60,919.26 : x
  2. Step 2: Convert to fraction form
    105,631.26/145,771.12 = 60,919.26/x
  3. Step 3: Cross multiply
    105,631.26x = 145,771.12 × 60,919.26
  4. Step 4: Simplify right side
    105,631.26x = 8,880,268,759.77
  5. Step 5: Solve for x
    x = 8,880,268,759.77/105,631.26
  6. Step 6: Final answer
    x = 84,068.57

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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.