Home / 103,640.20-155,421.90-33,521.80

Finding the Fourth Proportional to 103,640.20, 155,421.90 and 33,521.80

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Solution

The fourth proportional to 103,640.20, 155,421.90 and 33,521.80 is: 50,270.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.20 : 155,421.90 = 33,521.80 : x
  2. Step 2: Convert to fraction form
    103,640.20/155,421.90 = 33,521.80/x
  3. Step 3: Cross multiply
    103,640.20x = 155,421.90 × 33,521.80
  4. Step 4: Simplify right side
    103,640.20x = 5,210,021,847.42
  5. Step 5: Solve for x
    x = 5,210,021,847.42/103,640.20
  6. Step 6: Final answer
    x = 50,270.28

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1.5x scale

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.