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Finding the Fourth Proportional to 128,082.10, 191,777.55 and 128,082.10

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Solution

The fourth proportional to 128,082.10, 191,777.55 and 128,082.10 is: 191,777.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,082.10 : 191,777.55 = 128,082.10 : x
  2. Step 2: Convert to fraction form
    128,082.10/191,777.55 = 128,082.10/x
  3. Step 3: Cross multiply
    128,082.10x = 191,777.55 × 128,082.10
  4. Step 4: Simplify right side
    128,082.10x = 24,563,271,336.86
  5. Step 5: Solve for x
    x = 24,563,271,336.86/128,082.10
  6. Step 6: Final answer
    x = 191,777.55

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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.