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Finding the Fourth Proportional to 159,215.30, 219,692.06 and 91,219.17

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Solution

The fourth proportional to 159,215.30, 219,692.06 and 91,219.17 is: 125,868.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,215.30 : 219,692.06 = 91,219.17 : x
  2. Step 2: Convert to fraction form
    159,215.30/219,692.06 = 91,219.17/x
  3. Step 3: Cross multiply
    159,215.30x = 219,692.06 × 91,219.17
  4. Step 4: Simplify right side
    159,215.30x = 20,040,127,596.84
  5. Step 5: Solve for x
    x = 20,040,127,596.84/159,215.30
  6. Step 6: Final answer
    x = 125,868.11

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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.