Home / 221,475.48-305,631.90-120,874.20

Finding the Fourth Proportional to 221,475.48, 305,631.90 and 120,874.20

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Solution

The fourth proportional to 221,475.48, 305,631.90 and 120,874.20 is: 166,804.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,475.48 : 305,631.90 = 120,874.20 : x
  2. Step 2: Convert to fraction form
    221,475.48/305,631.90 = 120,874.20/x
  3. Step 3: Cross multiply
    221,475.48x = 305,631.90 × 120,874.20
  4. Step 4: Simplify right side
    221,475.48x = 36,943,011,406.98
  5. Step 5: Solve for x
    x = 36,943,011,406.98/221,475.48
  6. Step 6: Final answer
    x = 166,804.07

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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.