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Finding the Fourth Proportional to 118,730, 163,847.40 and 68,432.24

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Solution

The fourth proportional to 118,730, 163,847.40 and 68,432.24 is: 94,436.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,730 : 163,847.40 = 68,432.24 : x
  2. Step 2: Convert to fraction form
    118,730/163,847.40 = 68,432.24/x
  3. Step 3: Cross multiply
    118,730x = 163,847.40 × 68,432.24
  4. Step 4: Simplify right side
    118,730x = 11,212,444,600.18
  5. Step 5: Solve for x
    x = 11,212,444,600.18/118,730
  6. Step 6: Final answer
    x = 94,436.49

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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.