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Finding the Fourth Proportional to 143,456.88, 215,186.40 and 49,962.40

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Solution

The fourth proportional to 143,456.88, 215,186.40 and 49,962.40 is: 74,943.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,456.88 : 215,186.40 = 49,962.40 : x
  2. Step 2: Convert to fraction form
    143,456.88/215,186.40 = 49,962.40/x
  3. Step 3: Cross multiply
    143,456.88x = 215,186.40 × 49,962.40
  4. Step 4: Simplify right side
    143,456.88x = 10,751,228,991.36
  5. Step 5: Solve for x
    x = 10,751,228,991.36/143,456.88
  6. Step 6: Final answer
    x = 74,943.98

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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.