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Finding the Fourth Proportional to 116,611.20, 175,003.20 and 85,507.20

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Solution

The fourth proportional to 116,611.20, 175,003.20 and 85,507.20 is: 128,324.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,611.20 : 175,003.20 = 85,507.20 : x
  2. Step 2: Convert to fraction form
    116,611.20/175,003.20 = 85,507.20/x
  3. Step 3: Cross multiply
    116,611.20x = 175,003.20 × 85,507.20
  4. Step 4: Simplify right side
    116,611.20x = 14,964,033,623.04
  5. Step 5: Solve for x
    x = 14,964,033,623.04/116,611.20
  6. Step 6: Final answer
    x = 128,324.15

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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.