Home / 111,330.96-153,840.15-81,063.56

Finding the Fourth Proportional to 111,330.96, 153,840.15 and 81,063.56

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Solution

The fourth proportional to 111,330.96, 153,840.15 and 81,063.56 is: 112,015.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,330.96 : 153,840.15 = 81,063.56 : x
  2. Step 2: Convert to fraction form
    111,330.96/153,840.15 = 81,063.56/x
  3. Step 3: Cross multiply
    111,330.96x = 153,840.15 × 81,063.56
  4. Step 4: Simplify right side
    111,330.96x = 12,470,829,460.73
  5. Step 5: Solve for x
    x = 12,470,829,460.73/111,330.96
  6. Step 6: Final answer
    x = 112,015.83

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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.