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Finding the Fourth Proportional to 150,912.18, 208,242.90 and 87,270.48

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Solution

The fourth proportional to 150,912.18, 208,242.90 and 87,270.48 is: 120,424.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,912.18 : 208,242.90 = 87,270.48 : x
  2. Step 2: Convert to fraction form
    150,912.18/208,242.90 = 87,270.48/x
  3. Step 3: Cross multiply
    150,912.18x = 208,242.90 × 87,270.48
  4. Step 4: Simplify right side
    150,912.18x = 18,173,457,839.59
  5. Step 5: Solve for x
    x = 18,173,457,839.59/150,912.18
  6. Step 6: Final answer
    x = 120,424.06

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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.