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Finding the Fourth Proportional to 141,692.76, 195,491.94 and 80,428.92

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Solution

The fourth proportional to 141,692.76, 195,491.94 and 80,428.92 is: 110,966.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,692.76 : 195,491.94 = 80,428.92 : x
  2. Step 2: Convert to fraction form
    141,692.76/195,491.94 = 80,428.92/x
  3. Step 3: Cross multiply
    141,692.76x = 195,491.94 × 80,428.92
  4. Step 4: Simplify right side
    141,692.76x = 15,723,205,602.90
  5. Step 5: Solve for x
    x = 15,723,205,602.90/141,692.76
  6. Step 6: Final answer
    x = 110,966.89

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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.