Home / 152,218.80-228,328.20-69,112.80

Finding the Fourth Proportional to 152,218.80, 228,328.20 and 69,112.80

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Solution

The fourth proportional to 152,218.80, 228,328.20 and 69,112.80 is: 103,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,218.80 : 228,328.20 = 69,112.80 : x
  2. Step 2: Convert to fraction form
    152,218.80/228,328.20 = 69,112.80/x
  3. Step 3: Cross multiply
    152,218.80x = 228,328.20 × 69,112.80
  4. Step 4: Simplify right side
    152,218.80x = 15,780,401,220.96
  5. Step 5: Solve for x
    x = 15,780,401,220.96/152,218.80
  6. Step 6: Final answer
    x = 103,669.20

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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.