Home / 154,534.64-213,247.54-85,619.53

Finding the Fourth Proportional to 154,534.64, 213,247.54 and 85,619.53

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Solution

The fourth proportional to 154,534.64, 213,247.54 and 85,619.53 is: 118,149.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,534.64 : 213,247.54 = 85,619.53 : x
  2. Step 2: Convert to fraction form
    154,534.64/213,247.54 = 85,619.53/x
  3. Step 3: Cross multiply
    154,534.64x = 213,247.54 × 85,619.53
  4. Step 4: Simplify right side
    154,534.64x = 18,258,154,040.43
  5. Step 5: Solve for x
    x = 18,258,154,040.43/154,534.64
  6. Step 6: Final answer
    x = 118,149.27

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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.