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Finding the Fourth Proportional to 128,900.70, 193,132.35 and 106,593.30

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Solution

The fourth proportional to 128,900.70, 193,132.35 and 106,593.30 is: 159,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,900.70 : 193,132.35 = 106,593.30 : x
  2. Step 2: Convert to fraction form
    128,900.70/193,132.35 = 106,593.30/x
  3. Step 3: Cross multiply
    128,900.70x = 193,132.35 × 106,593.30
  4. Step 4: Simplify right side
    128,900.70x = 20,586,614,523.26
  5. Step 5: Solve for x
    x = 20,586,614,523.26/128,900.70
  6. Step 6: Final answer
    x = 159,709.10

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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.