Home / 108,692.46-149,867.55-100,631.34

Finding the Fourth Proportional to 108,692.46, 149,867.55 and 100,631.34

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Solution

The fourth proportional to 108,692.46, 149,867.55 and 100,631.34 is: 138,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,692.46 : 149,867.55 = 100,631.34 : x
  2. Step 2: Convert to fraction form
    108,692.46/149,867.55 = 100,631.34/x
  3. Step 3: Cross multiply
    108,692.46x = 149,867.55 × 100,631.34
  4. Step 4: Simplify right side
    108,692.46x = 15,081,372,379.02
  5. Step 5: Solve for x
    x = 15,081,372,379.02/108,692.46
  6. Step 6: Final answer
    x = 138,752.70

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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.