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Finding the Fourth Proportional to 152,157.79, 209,993.52 and 87,629.33

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Solution

The fourth proportional to 152,157.79, 209,993.52 and 87,629.33 is: 120,937.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,157.79 : 209,993.52 = 87,629.33 : x
  2. Step 2: Convert to fraction form
    152,157.79/209,993.52 = 87,629.33/x
  3. Step 3: Cross multiply
    152,157.79x = 209,993.52 × 87,629.33
  4. Step 4: Simplify right side
    152,157.79x = 18,401,591,588.93
  5. Step 5: Solve for x
    x = 18,401,591,588.93/152,157.79
  6. Step 6: Final answer
    x = 120,937.56

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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.