Home / 120,692.16-180,979.92-53,215.92

Finding the Fourth Proportional to 120,692.16, 180,979.92 and 53,215.92

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Solution

The fourth proportional to 120,692.16, 180,979.92 and 53,215.92 is: 79,798.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,692.16 : 180,979.92 = 53,215.92 : x
  2. Step 2: Convert to fraction form
    120,692.16/180,979.92 = 53,215.92/x
  3. Step 3: Cross multiply
    120,692.16x = 180,979.92 × 53,215.92
  4. Step 4: Simplify right side
    120,692.16x = 9,631,012,944.33
  5. Step 5: Solve for x
    x = 9,631,012,944.33/120,692.16
  6. Step 6: Final answer
    x = 79,798.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.