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Finding the Fourth Proportional to 118,840.40, 163,999.76 and 68,539.40

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Solution

The fourth proportional to 118,840.40, 163,999.76 and 68,539.40 is: 94,584.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,840.40 : 163,999.76 = 68,539.40 : x
  2. Step 2: Convert to fraction form
    118,840.40/163,999.76 = 68,539.40/x
  3. Step 3: Cross multiply
    118,840.40x = 163,999.76 × 68,539.40
  4. Step 4: Simplify right side
    118,840.40x = 11,240,445,150.54
  5. Step 5: Solve for x
    x = 11,240,445,150.54/118,840.40
  6. Step 6: Final answer
    x = 94,584.38

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1.5x scale

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.