Home / 120,692.16-181,121.40-54,206.82

Finding the Fourth Proportional to 120,692.16, 181,121.40 and 54,206.82

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Solution

The fourth proportional to 120,692.16, 181,121.40 and 54,206.82 is: 81,347.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,692.16 : 181,121.40 = 54,206.82 : x
  2. Step 2: Convert to fraction form
    120,692.16/181,121.40 = 54,206.82/x
  3. Step 3: Cross multiply
    120,692.16x = 181,121.40 × 54,206.82
  4. Step 4: Simplify right side
    120,692.16x = 9,818,015,127.95
  5. Step 5: Solve for x
    x = 9,818,015,127.95/120,692.16
  6. Step 6: Final answer
    x = 81,347.58

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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.