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Finding the Fourth Proportional to 108,611.40, 162,917.10 and 100,738.20

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Solution

The fourth proportional to 108,611.40, 162,917.10 and 100,738.20 is: 151,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,611.40 : 162,917.10 = 100,738.20 : x
  2. Step 2: Convert to fraction form
    108,611.40/162,917.10 = 100,738.20/x
  3. Step 3: Cross multiply
    108,611.40x = 162,917.10 × 100,738.20
  4. Step 4: Simplify right side
    108,611.40x = 16,411,975,403.22
  5. Step 5: Solve for x
    x = 16,411,975,403.22/108,611.40
  6. Step 6: Final answer
    x = 151,107.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.