Home / 111,218.35-153,551.04-85,676.62

Finding the Fourth Proportional to 111,218.35, 153,551.04 and 85,676.62

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Solution

The fourth proportional to 111,218.35, 153,551.04 and 85,676.62 is: 118,287.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,218.35 : 153,551.04 = 85,676.62 : x
  2. Step 2: Convert to fraction form
    111,218.35/153,551.04 = 85,676.62/x
  3. Step 3: Cross multiply
    111,218.35x = 153,551.04 × 85,676.62
  4. Step 4: Simplify right side
    111,218.35x = 13,155,733,720.81
  5. Step 5: Solve for x
    x = 13,155,733,720.81/111,218.35
  6. Step 6: Final answer
    x = 118,287.44

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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.