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Finding the Fourth Proportional to 118,730.10, 163,866.06 and 67,742.76

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Solution

The fourth proportional to 118,730.10, 163,866.06 and 67,742.76 is: 93,495.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,730.10 : 163,866.06 = 67,742.76 : x
  2. Step 2: Convert to fraction form
    118,730.10/163,866.06 = 67,742.76/x
  3. Step 3: Cross multiply
    118,730.10x = 163,866.06 × 67,742.76
  4. Step 4: Simplify right side
    118,730.10x = 11,100,739,174.73
  5. Step 5: Solve for x
    x = 11,100,739,174.73/118,730.10
  6. Step 6: Final answer
    x = 93,495.58

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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.