Home / 111,938.32-154,468.84-64,193.68

Finding the Fourth Proportional to 111,938.32, 154,468.84 and 64,193.68

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Solution

The fourth proportional to 111,938.32, 154,468.84 and 64,193.68 is: 88,583.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,938.32 : 154,468.84 = 64,193.68 : x
  2. Step 2: Convert to fraction form
    111,938.32/154,468.84 = 64,193.68/x
  3. Step 3: Cross multiply
    111,938.32x = 154,468.84 × 64,193.68
  4. Step 4: Simplify right side
    111,938.32x = 9,915,923,284.93
  5. Step 5: Solve for x
    x = 9,915,923,284.93/111,938.32
  6. Step 6: Final answer
    x = 88,583.81

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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.