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Finding the Fourth Proportional to 128,019.62, 191,846.40 and 94,018.94

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Solution

The fourth proportional to 128,019.62, 191,846.40 and 94,018.94 is: 140,893.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,019.62 : 191,846.40 = 94,018.94 : x
  2. Step 2: Convert to fraction form
    128,019.62/191,846.40 = 94,018.94/x
  3. Step 3: Cross multiply
    128,019.62x = 191,846.40 × 94,018.94
  4. Step 4: Simplify right side
    128,019.62x = 18,037,195,170.82
  5. Step 5: Solve for x
    x = 18,037,195,170.82/128,019.62
  6. Step 6: Final answer
    x = 140,893.99

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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.