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Finding the Fourth Proportional to 150,290.64, 207,399.13 and 85,758.19

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Solution

The fourth proportional to 150,290.64, 207,399.13 and 85,758.19 is: 118,345.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,290.64 : 207,399.13 = 85,758.19 : x
  2. Step 2: Convert to fraction form
    150,290.64/207,399.13 = 85,758.19/x
  3. Step 3: Cross multiply
    150,290.64x = 207,399.13 × 85,758.19
  4. Step 4: Simplify right side
    150,290.64x = 17,786,174,912.49
  5. Step 5: Solve for x
    x = 17,786,174,912.49/150,290.64
  6. Step 6: Final answer
    x = 118,345.19

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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.