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Finding the Fourth Proportional to 117,958.69, 162,784.85 and 64,243.66

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Solution

The fourth proportional to 117,958.69, 162,784.85 and 64,243.66 is: 88,657.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,958.69 : 162,784.85 = 64,243.66 : x
  2. Step 2: Convert to fraction form
    117,958.69/162,784.85 = 64,243.66/x
  3. Step 3: Cross multiply
    117,958.69x = 162,784.85 × 64,243.66
  4. Step 4: Simplify right side
    117,958.69x = 10,457,894,751.05
  5. Step 5: Solve for x
    x = 10,457,894,751.05/117,958.69
  6. Step 6: Final answer
    x = 88,657.27

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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.