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Finding the Fourth Proportional to 118,321.60, 163,290.40 and 64,611.60

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Solution

The fourth proportional to 118,321.60, 163,290.40 and 64,611.60 is: 89,167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,321.60 : 163,290.40 = 64,611.60 : x
  2. Step 2: Convert to fraction form
    118,321.60/163,290.40 = 64,611.60/x
  3. Step 3: Cross multiply
    118,321.60x = 163,290.40 × 64,611.60
  4. Step 4: Simplify right side
    118,321.60x = 10,550,454,008.64
  5. Step 5: Solve for x
    x = 10,550,454,008.64/118,321.60
  6. Step 6: Final answer
    x = 89,167.61

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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.