Home / 128,539.68-192,807.45-35,045.43

Finding the Fourth Proportional to 128,539.68, 192,807.45 and 35,045.43

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Solution

The fourth proportional to 128,539.68, 192,807.45 and 35,045.43 is: 52,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,539.68 : 192,807.45 = 35,045.43 : x
  2. Step 2: Convert to fraction form
    128,539.68/192,807.45 = 35,045.43/x
  3. Step 3: Cross multiply
    128,539.68x = 192,807.45 × 35,045.43
  4. Step 4: Simplify right side
    128,539.68x = 6,757,019,992.45
  5. Step 5: Solve for x
    x = 6,757,019,992.45/128,539.68
  6. Step 6: Final answer
    x = 52,567.58

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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.