Home / 111,916.96-154,440.88-64,137.12

Finding the Fourth Proportional to 111,916.96, 154,440.88 and 64,137.12

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Solution

The fourth proportional to 111,916.96, 154,440.88 and 64,137.12 is: 88,506.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,916.96 : 154,440.88 = 64,137.12 : x
  2. Step 2: Convert to fraction form
    111,916.96/154,440.88 = 64,137.12/x
  3. Step 3: Cross multiply
    111,916.96x = 154,440.88 × 64,137.12
  4. Step 4: Simplify right side
    111,916.96x = 9,905,393,253.47
  5. Step 5: Solve for x
    x = 9,905,393,253.47/111,916.96
  6. Step 6: Final answer
    x = 88,506.63

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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.