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Finding the Fourth Proportional to 143,661.54, 215,515.08 and 43,798.86

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Solution

The fourth proportional to 143,661.54, 215,515.08 and 43,798.86 is: 65,705.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,661.54 : 215,515.08 = 43,798.86 : x
  2. Step 2: Convert to fraction form
    143,661.54/215,515.08 = 43,798.86/x
  3. Step 3: Cross multiply
    143,661.54x = 215,515.08 × 43,798.86
  4. Step 4: Simplify right side
    143,661.54x = 9,439,314,816.81
  5. Step 5: Solve for x
    x = 9,439,314,816.81/143,661.54
  6. Step 6: Final answer
    x = 65,705.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.