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Finding the Fourth Proportional to 117,479.35, 162,120.96 and 63,763.90

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Solution

The fourth proportional to 117,479.35, 162,120.96 and 63,763.90 is: 87,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,479.35 : 162,120.96 = 63,763.90 : x
  2. Step 2: Convert to fraction form
    117,479.35/162,120.96 = 63,763.90/x
  3. Step 3: Cross multiply
    117,479.35x = 162,120.96 × 63,763.90
  4. Step 4: Simplify right side
    117,479.35x = 10,337,464,681.34
  5. Step 5: Solve for x
    x = 10,337,464,681.34/117,479.35
  6. Step 6: Final answer
    x = 87,993.89

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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.