Home / 105,692.77-145,855.99-57,945.10

Finding the Fourth Proportional to 105,692.77, 145,855.99 and 57,945.10

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Solution

The fourth proportional to 105,692.77, 145,855.99 and 57,945.10 is: 79,964.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,692.77 : 145,855.99 = 57,945.10 : x
  2. Step 2: Convert to fraction form
    105,692.77/145,855.99 = 57,945.10/x
  3. Step 3: Cross multiply
    105,692.77x = 145,855.99 × 57,945.10
  4. Step 4: Simplify right side
    105,692.77x = 8,451,638,907.14
  5. Step 5: Solve for x
    x = 8,451,638,907.14/105,692.77
  6. Step 6: Final answer
    x = 79,964.21

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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.