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Finding the Fourth Proportional to 85,467.30, 128,200.95 and 84,884.10

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Solution

The fourth proportional to 85,467.30, 128,200.95 and 84,884.10 is: 127,326.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,467.30 : 128,200.95 = 84,884.10 : x
  2. Step 2: Convert to fraction form
    85,467.30/128,200.95 = 84,884.10/x
  3. Step 3: Cross multiply
    85,467.30x = 128,200.95 × 84,884.10
  4. Step 4: Simplify right side
    85,467.30x = 10,882,222,259.90
  5. Step 5: Solve for x
    x = 10,882,222,259.90/85,467.30
  6. Step 6: Final answer
    x = 127,326.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.