Home / 112,905.88-155,812.26-61,915.57

Finding the Fourth Proportional to 112,905.88, 155,812.26 and 61,915.57

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Solution

The fourth proportional to 112,905.88, 155,812.26 and 61,915.57 is: 85,444.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,905.88 : 155,812.26 = 61,915.57 : x
  2. Step 2: Convert to fraction form
    112,905.88/155,812.26 = 61,915.57/x
  3. Step 3: Cross multiply
    112,905.88x = 155,812.26 × 61,915.57
  4. Step 4: Simplify right side
    112,905.88x = 9,647,204,890.89
  5. Step 5: Solve for x
    x = 9,647,204,890.89/112,905.88
  6. Step 6: Final answer
    x = 85,444.66

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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.