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Finding the Fourth Proportional to 139,026.96, 191,855.52 and 75,363.84

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Solution

The fourth proportional to 139,026.96, 191,855.52 and 75,363.84 is: 104,001.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,026.96 : 191,855.52 = 75,363.84 : x
  2. Step 2: Convert to fraction form
    139,026.96/191,855.52 = 75,363.84/x
  3. Step 3: Cross multiply
    139,026.96x = 191,855.52 × 75,363.84
  4. Step 4: Simplify right side
    139,026.96x = 14,458,968,712.40
  5. Step 5: Solve for x
    x = 14,458,968,712.40/139,026.96
  6. Step 6: Final answer
    x = 104,001.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.