Home / 141,692.78-195,542.08-81,280.46

Finding the Fourth Proportional to 141,692.78, 195,542.08 and 81,280.46

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Solution

The fourth proportional to 141,692.78, 195,542.08 and 81,280.46 is: 112,170.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,692.78 : 195,542.08 = 81,280.46 : x
  2. Step 2: Convert to fraction form
    141,692.78/195,542.08 = 81,280.46/x
  3. Step 3: Cross multiply
    141,692.78x = 195,542.08 × 81,280.46
  4. Step 4: Simplify right side
    141,692.78x = 15,893,750,211.76
  5. Step 5: Solve for x
    x = 15,893,750,211.76/141,692.78
  6. Step 6: Final answer
    x = 112,170.50

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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.