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Finding the Fourth Proportional to 118,336.30, 163,211.78 and 75,898.06

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Solution

The fourth proportional to 118,336.30, 163,211.78 and 75,898.06 is: 104,680.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,336.30 : 163,211.78 = 75,898.06 : x
  2. Step 2: Convert to fraction form
    118,336.30/163,211.78 = 75,898.06/x
  3. Step 3: Cross multiply
    118,336.30x = 163,211.78 × 75,898.06
  4. Step 4: Simplify right side
    118,336.30x = 12,387,457,471.15
  5. Step 5: Solve for x
    x = 12,387,457,471.15/118,336.30
  6. Step 6: Final answer
    x = 104,680.11

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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.