Home / 128,567.81-192,882.50-53,646.39

Finding the Fourth Proportional to 128,567.81, 192,882.50 and 53,646.39

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Solution

The fourth proportional to 128,567.81, 192,882.50 and 53,646.39 is: 80,482.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,567.81 : 192,882.50 = 53,646.39 : x
  2. Step 2: Convert to fraction form
    128,567.81/192,882.50 = 53,646.39/x
  3. Step 3: Cross multiply
    128,567.81x = 192,882.50 × 53,646.39
  4. Step 4: Simplify right side
    128,567.81x = 10,347,449,550.94
  5. Step 5: Solve for x
    x = 10,347,449,550.94/128,567.81
  6. Step 6: Final answer
    x = 80,482.43

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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.