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Finding the Fourth Proportional to 150,506.94, 207,705.94 and 85,986.80

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Solution

The fourth proportional to 150,506.94, 207,705.94 and 85,986.80 is: 118,665.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,506.94 : 207,705.94 = 85,986.80 : x
  2. Step 2: Convert to fraction form
    150,506.94/207,705.94 = 85,986.80/x
  3. Step 3: Cross multiply
    150,506.94x = 207,705.94 × 85,986.80
  4. Step 4: Simplify right side
    150,506.94x = 17,859,967,868.10
  5. Step 5: Solve for x
    x = 17,859,967,868.10/150,506.94
  6. Step 6: Final answer
    x = 118,665.41

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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.