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Finding the Fourth Proportional to 128,018.62, 191,844.90 and 94,017.94

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Solution

The fourth proportional to 128,018.62, 191,844.90 and 94,017.94 is: 140,892.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,018.62 : 191,844.90 = 94,017.94 : x
  2. Step 2: Convert to fraction form
    128,018.62/191,844.90 = 94,017.94/x
  3. Step 3: Cross multiply
    128,018.62x = 191,844.90 × 94,017.94
  4. Step 4: Simplify right side
    128,018.62x = 18,036,862,297.51
  5. Step 5: Solve for x
    x = 18,036,862,297.51/128,018.62
  6. Step 6: Final answer
    x = 140,892.49

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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.