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Finding the Fourth Proportional to 143,402.01, 215,102.94 and 43,561.82

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Solution

The fourth proportional to 143,402.01, 215,102.94 and 43,561.82 is: 65,342.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,402.01 : 215,102.94 = 43,561.82 : x
  2. Step 2: Convert to fraction form
    143,402.01/215,102.94 = 43,561.82/x
  3. Step 3: Cross multiply
    143,402.01x = 215,102.94 × 43,561.82
  4. Step 4: Simplify right side
    143,402.01x = 9,370,274,478.24
  5. Step 5: Solve for x
    x = 9,370,274,478.24/143,402.01
  6. Step 6: Final answer
    x = 65,342.70

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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.