Home / 109,692.18-151,385.36-66,661.74

Finding the Fourth Proportional to 109,692.18, 151,385.36 and 66,661.74

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Solution

The fourth proportional to 109,692.18, 151,385.36 and 66,661.74 is: 91,999.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,692.18 : 151,385.36 = 66,661.74 : x
  2. Step 2: Convert to fraction form
    109,692.18/151,385.36 = 66,661.74/x
  3. Step 3: Cross multiply
    109,692.18x = 151,385.36 × 66,661.74
  4. Step 4: Simplify right side
    109,692.18x = 10,091,611,174.82
  5. Step 5: Solve for x
    x = 10,091,611,174.82/109,692.18
  6. Step 6: Final answer
    x = 91,999.37

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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.