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Finding the Fourth Proportional to 150,362.80, 207,449.58 and 85,785.65

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Solution

The fourth proportional to 150,362.80, 207,449.58 and 85,785.65 is: 118,355.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,362.80 : 207,449.58 = 85,785.65 : x
  2. Step 2: Convert to fraction form
    150,362.80/207,449.58 = 85,785.65/x
  3. Step 3: Cross multiply
    150,362.80x = 207,449.58 × 85,785.65
  4. Step 4: Simplify right side
    150,362.80x = 17,796,196,025.28
  5. Step 5: Solve for x
    x = 17,796,196,025.28/150,362.80
  6. Step 6: Final answer
    x = 118,355.05

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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.