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Finding the Fourth Proportional to 118,754.49, 163,840.56 and 67,730.55

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Solution

The fourth proportional to 118,754.49, 163,840.56 and 67,730.55 is: 93,444.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,754.49 : 163,840.56 = 67,730.55 : x
  2. Step 2: Convert to fraction form
    118,754.49/163,840.56 = 67,730.55/x
  3. Step 3: Cross multiply
    118,754.49x = 163,840.56 × 67,730.55
  4. Step 4: Simplify right side
    118,754.49x = 11,097,011,241.11
  5. Step 5: Solve for x
    x = 11,097,011,241.11/118,754.49
  6. Step 6: Final answer
    x = 93,444.98

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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.