Home / 112,218.56-154,861.28-61,917.60

Finding the Fourth Proportional to 112,218.56, 154,861.28 and 61,917.60

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Solution

The fourth proportional to 112,218.56, 154,861.28 and 61,917.60 is: 85,446.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,218.56 : 154,861.28 = 61,917.60 : x
  2. Step 2: Convert to fraction form
    112,218.56/154,861.28 = 61,917.60/x
  3. Step 3: Cross multiply
    112,218.56x = 154,861.28 × 61,917.60
  4. Step 4: Simplify right side
    112,218.56x = 9,588,638,790.53
  5. Step 5: Solve for x
    x = 9,588,638,790.53/112,218.56
  6. Step 6: Final answer
    x = 85,446.10

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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.