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Finding the Fourth Proportional to 118,321.35, 163,290.08 and 64,611.35

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Solution

The fourth proportional to 118,321.35, 163,290.08 and 64,611.35 is: 89,167.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,321.35 : 163,290.08 = 64,611.35 : x
  2. Step 2: Convert to fraction form
    118,321.35/163,290.08 = 64,611.35/x
  3. Step 3: Cross multiply
    118,321.35x = 163,290.08 × 64,611.35
  4. Step 4: Simplify right side
    118,321.35x = 10,550,392,187.35
  5. Step 5: Solve for x
    x = 10,550,392,187.35/118,321.35
  6. Step 6: Final answer
    x = 89,167.27

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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.