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Finding the Fourth Proportional to 117,902.81, 162,709.29 and 64,188.74

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Solution

The fourth proportional to 117,902.81, 162,709.29 and 64,188.74 is: 88,582.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,902.81 : 162,709.29 = 64,188.74 : x
  2. Step 2: Convert to fraction form
    117,902.81/162,709.29 = 64,188.74/x
  3. Step 3: Cross multiply
    117,902.81x = 162,709.29 × 64,188.74
  4. Step 4: Simplify right side
    117,902.81x = 10,444,104,311.39
  5. Step 5: Solve for x
    x = 10,444,104,311.39/117,902.81
  6. Step 6: Final answer
    x = 88,582.32

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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.