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Finding the Fourth Proportional to 159,057.88, 219,495.50 and 87,437.96

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Solution

The fourth proportional to 159,057.88, 219,495.50 and 87,437.96 is: 120,661.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,057.88 : 219,495.50 = 87,437.96 : x
  2. Step 2: Convert to fraction form
    159,057.88/219,495.50 = 87,437.96/x
  3. Step 3: Cross multiply
    159,057.88x = 219,495.50 × 87,437.96
  4. Step 4: Simplify right side
    159,057.88x = 19,192,238,749.18
  5. Step 5: Solve for x
    x = 19,192,238,749.18/159,057.88
  6. Step 6: Final answer
    x = 120,661.98

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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.