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Finding the Fourth Proportional to 119,465.55, 164,865.38 and 65,745.54

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Solution

The fourth proportional to 119,465.55, 164,865.38 and 65,745.54 is: 90,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,465.55 : 164,865.38 = 65,745.54 : x
  2. Step 2: Convert to fraction form
    119,465.55/164,865.38 = 65,745.54/x
  3. Step 3: Cross multiply
    119,465.55x = 164,865.38 × 65,745.54
  4. Step 4: Simplify right side
    119,465.55x = 10,839,163,106.68
  5. Step 5: Solve for x
    x = 10,839,163,106.68/119,465.55
  6. Step 6: Final answer
    x = 90,730.45

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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.