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Finding the Fourth Proportional to 117,289.35, 161,859.47 and 63,574.34

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Solution

The fourth proportional to 117,289.35, 161,859.47 and 63,574.34 is: 87,732.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,289.35 : 161,859.47 = 63,574.34 : x
  2. Step 2: Convert to fraction form
    117,289.35/161,859.47 = 63,574.34/x
  3. Step 3: Cross multiply
    117,289.35x = 161,859.47 × 63,574.34
  4. Step 4: Simplify right side
    117,289.35x = 10,290,107,850.83
  5. Step 5: Solve for x
    x = 10,290,107,850.83/117,289.35
  6. Step 6: Final answer
    x = 87,732.67

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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.