Home / 111,939.49-154,472.93-66,607.10

Finding the Fourth Proportional to 111,939.49, 154,472.93 and 66,607.10

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Solution

The fourth proportional to 111,939.49, 154,472.93 and 66,607.10 is: 91,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,939.49 : 154,472.93 = 66,607.10 : x
  2. Step 2: Convert to fraction form
    111,939.49/154,472.93 = 66,607.10/x
  3. Step 3: Cross multiply
    111,939.49x = 154,472.93 × 66,607.10
  4. Step 4: Simplify right side
    111,939.49x = 10,288,993,895.80
  5. Step 5: Solve for x
    x = 10,288,993,895.80/111,939.49
  6. Step 6: Final answer
    x = 91,915.68

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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.