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Finding the Fourth Proportional to 143,804.55, 215,707.42 and 43,964.59

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Solution

The fourth proportional to 143,804.55, 215,707.42 and 43,964.59 is: 65,947.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,804.55 : 215,707.42 = 43,964.59 : x
  2. Step 2: Convert to fraction form
    143,804.55/215,707.42 = 43,964.59/x
  3. Step 3: Cross multiply
    143,804.55x = 215,707.42 × 43,964.59
  4. Step 4: Simplify right side
    143,804.55x = 9,483,487,104.91
  5. Step 5: Solve for x
    x = 9,483,487,104.91/143,804.55
  6. Step 6: Final answer
    x = 65,947.06

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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.