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Finding the Fourth Proportional to 150,718.96, 207,993.54 and 87,055.30

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Solution

The fourth proportional to 150,718.96, 207,993.54 and 87,055.30 is: 120,137.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,718.96 : 207,993.54 = 87,055.30 : x
  2. Step 2: Convert to fraction form
    150,718.96/207,993.54 = 87,055.30/x
  3. Step 3: Cross multiply
    150,718.96x = 207,993.54 × 87,055.30
  4. Step 4: Simplify right side
    150,718.96x = 18,106,940,022.76
  5. Step 5: Solve for x
    x = 18,106,940,022.76/150,718.96
  6. Step 6: Final answer
    x = 120,137.11

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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.