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Finding the Fourth Proportional to 102,550.81, 141,480.66 and 64,243.69

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Solution

The fourth proportional to 102,550.81, 141,480.66 and 64,243.69 is: 88,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,550.81 : 141,480.66 = 64,243.69 : x
  2. Step 2: Convert to fraction form
    102,550.81/141,480.66 = 64,243.69/x
  3. Step 3: Cross multiply
    102,550.81x = 141,480.66 × 64,243.69
  4. Step 4: Simplify right side
    102,550.81x = 9,089,239,662.04
  5. Step 5: Solve for x
    x = 9,089,239,662.04/102,550.81
  6. Step 6: Final answer
    x = 88,631.57

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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.