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Finding the Fourth Proportional to 117,845.98, 162,580.98 and 87,293.50

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Solution

The fourth proportional to 117,845.98, 162,580.98 and 87,293.50 is: 120,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,845.98 : 162,580.98 = 87,293.50 : x
  2. Step 2: Convert to fraction form
    117,845.98/162,580.98 = 87,293.50/x
  3. Step 3: Cross multiply
    117,845.98x = 162,580.98 × 87,293.50
  4. Step 4: Simplify right side
    117,845.98x = 14,192,262,777.63
  5. Step 5: Solve for x
    x = 14,192,262,777.63/117,845.98
  6. Step 6: Final answer
    x = 120,430.61

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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.