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Finding the Fourth Proportional to 111,859.80, 167,400.90 and 102,528.60

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Solution

The fourth proportional to 111,859.80, 167,400.90 and 102,528.60 is: 153,436.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,859.80 : 167,400.90 = 102,528.60 : x
  2. Step 2: Convert to fraction form
    111,859.80/167,400.90 = 102,528.60/x
  3. Step 3: Cross multiply
    111,859.80x = 167,400.90 × 102,528.60
  4. Step 4: Simplify right side
    111,859.80x = 17,163,379,915.74
  5. Step 5: Solve for x
    x = 17,163,379,915.74/111,859.80
  6. Step 6: Final answer
    x = 153,436.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.