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Finding the Fourth Proportional to 128,603.95, 192,936.32 and 53,682.46

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Solution

The fourth proportional to 128,603.95, 192,936.32 and 53,682.46 is: 80,536.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,603.95 : 192,936.32 = 53,682.46 : x
  2. Step 2: Convert to fraction form
    128,603.95/192,936.32 = 53,682.46/x
  3. Step 3: Cross multiply
    128,603.95x = 192,936.32 × 53,682.46
  4. Step 4: Simplify right side
    128,603.95x = 10,357,296,280.95
  5. Step 5: Solve for x
    x = 10,357,296,280.95/128,603.95
  6. Step 6: Final answer
    x = 80,536.38

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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.