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Finding the Fourth Proportional to 128,001, 191,994.30 and 39,254.27

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Solution

The fourth proportional to 128,001, 191,994.30 and 39,254.27 is: 58,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,001 : 191,994.30 = 39,254.27 : x
  2. Step 2: Convert to fraction form
    128,001/191,994.30 = 39,254.27/x
  3. Step 3: Cross multiply
    128,001x = 191,994.30 × 39,254.27
  4. Step 4: Simplify right side
    128,001x = 7,536,596,090.66
  5. Step 5: Solve for x
    x = 7,536,596,090.66/128,001
  6. Step 6: Final answer
    x = 58,879.20

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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.