Home / 111,419.79-153,709.54-66,099.70

Finding the Fourth Proportional to 111,419.79, 153,709.54 and 66,099.70

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Solution

The fourth proportional to 111,419.79, 153,709.54 and 66,099.70 is: 91,188.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,419.79 : 153,709.54 = 66,099.70 : x
  2. Step 2: Convert to fraction form
    111,419.79/153,709.54 = 66,099.70/x
  3. Step 3: Cross multiply
    111,419.79x = 153,709.54 × 66,099.70
  4. Step 4: Simplify right side
    111,419.79x = 10,160,154,481.14
  5. Step 5: Solve for x
    x = 10,160,154,481.14/111,419.79
  6. Step 6: Final answer
    x = 91,188.06

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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.