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Finding the Fourth Proportional to 136,788.94, 205,410.35 and 84,530.58

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Solution

The fourth proportional to 136,788.94, 205,410.35 and 84,530.58 is: 126,936.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,788.94 : 205,410.35 = 84,530.58 : x
  2. Step 2: Convert to fraction form
    136,788.94/205,410.35 = 84,530.58/x
  3. Step 3: Cross multiply
    136,788.94x = 205,410.35 × 84,530.58
  4. Step 4: Simplify right side
    136,788.94x = 17,363,456,023.50
  5. Step 5: Solve for x
    x = 17,363,456,023.50/136,788.94
  6. Step 6: Final answer
    x = 126,936.11

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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.