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Finding the Fourth Proportional to 152,615.40, 228,728.70 and 111,013.80

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Solution

The fourth proportional to 152,615.40, 228,728.70 and 111,013.80 is: 166,379.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,615.40 : 228,728.70 = 111,013.80 : x
  2. Step 2: Convert to fraction form
    152,615.40/228,728.70 = 111,013.80/x
  3. Step 3: Cross multiply
    152,615.40x = 228,728.70 × 111,013.80
  4. Step 4: Simplify right side
    152,615.40x = 25,392,042,156.06
  5. Step 5: Solve for x
    x = 25,392,042,156.06/152,615.40
  6. Step 6: Final answer
    x = 166,379.29

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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.