Home / 111,508.09-153,855.80-66,162.67

Finding the Fourth Proportional to 111,508.09, 153,855.80 and 66,162.67

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Solution

The fourth proportional to 111,508.09, 153,855.80 and 66,162.67 is: 91,289.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,508.09 : 153,855.80 = 66,162.67 : x
  2. Step 2: Convert to fraction form
    111,508.09/153,855.80 = 66,162.67/x
  3. Step 3: Cross multiply
    111,508.09x = 153,855.80 × 66,162.67
  4. Step 4: Simplify right side
    111,508.09x = 10,179,510,192.17
  5. Step 5: Solve for x
    x = 10,179,510,192.17/111,508.09
  6. Step 6: Final answer
    x = 91,289.43

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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.