Home / 128,536.40-192,597.24-66,017.36

Finding the Fourth Proportional to 128,536.40, 192,597.24 and 66,017.36

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Solution

The fourth proportional to 128,536.40, 192,597.24 and 66,017.36 is: 98,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,536.40 : 192,597.24 = 66,017.36 : x
  2. Step 2: Convert to fraction form
    128,536.40/192,597.24 = 66,017.36/x
  3. Step 3: Cross multiply
    128,536.40x = 192,597.24 × 66,017.36
  4. Step 4: Simplify right side
    128,536.40x = 12,714,761,328.09
  5. Step 5: Solve for x
    x = 12,714,761,328.09/128,536.40
  6. Step 6: Final answer
    x = 98,919.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.