Home / 150,544.50-207,783.81-90,128.63

Finding the Fourth Proportional to 150,544.50, 207,783.81 and 90,128.63

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Solution

The fourth proportional to 150,544.50, 207,783.81 and 90,128.63 is: 124,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,544.50 : 207,783.81 = 90,128.63 : x
  2. Step 2: Convert to fraction form
    150,544.50/207,783.81 = 90,128.63/x
  3. Step 3: Cross multiply
    150,544.50x = 207,783.81 × 90,128.63
  4. Step 4: Simplify right side
    150,544.50x = 18,727,270,131.48
  5. Step 5: Solve for x
    x = 18,727,270,131.48/150,544.50
  6. Step 6: Final answer
    x = 124,396.91

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1.5x scale

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.