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Finding the Fourth Proportional to 108,692.70, 163,039.05 and 99,015.90

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Solution

The fourth proportional to 108,692.70, 163,039.05 and 99,015.90 is: 148,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,692.70 : 163,039.05 = 99,015.90 : x
  2. Step 2: Convert to fraction form
    108,692.70/163,039.05 = 99,015.90/x
  3. Step 3: Cross multiply
    108,692.70x = 163,039.05 × 99,015.90
  4. Step 4: Simplify right side
    108,692.70x = 16,143,458,270.90
  5. Step 5: Solve for x
    x = 16,143,458,270.90/108,692.70
  6. Step 6: Final answer
    x = 148,523.85

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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.