Home / 154,469.40-212,986.16-123,817.98

Finding the Fourth Proportional to 154,469.40, 212,986.16 and 123,817.98

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Solution

The fourth proportional to 154,469.40, 212,986.16 and 123,817.98 is: 170,723.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,469.40 : 212,986.16 = 123,817.98 : x
  2. Step 2: Convert to fraction form
    154,469.40/212,986.16 = 123,817.98/x
  3. Step 3: Cross multiply
    154,469.40x = 212,986.16 × 123,817.98
  4. Step 4: Simplify right side
    154,469.40x = 26,371,516,743.08
  5. Step 5: Solve for x
    x = 26,371,516,743.08/154,469.40
  6. Step 6: Final answer
    x = 170,723.25

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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.