Home / 128,234.24-177,012.64-114,781.76

Finding the Fourth Proportional to 128,234.24, 177,012.64 and 114,781.76

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Solution

The fourth proportional to 128,234.24, 177,012.64 and 114,781.76 is: 158,443.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,234.24 : 177,012.64 = 114,781.76 : x
  2. Step 2: Convert to fraction form
    128,234.24/177,012.64 = 114,781.76/x
  3. Step 3: Cross multiply
    128,234.24x = 177,012.64 × 114,781.76
  4. Step 4: Simplify right side
    128,234.24x = 20,317,822,361.45
  5. Step 5: Solve for x
    x = 20,317,822,361.45/128,234.24
  6. Step 6: Final answer
    x = 158,443.04

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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.