Home / 128,748.80-193,113.60-53,849.60

Finding the Fourth Proportional to 128,748.80, 193,113.60 and 53,849.60

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Solution

The fourth proportional to 128,748.80, 193,113.60 and 53,849.60 is: 80,770.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,748.80 : 193,113.60 = 53,849.60 : x
  2. Step 2: Convert to fraction form
    128,748.80/193,113.60 = 53,849.60/x
  3. Step 3: Cross multiply
    128,748.80x = 193,113.60 × 53,849.60
  4. Step 4: Simplify right side
    128,748.80x = 10,399,090,114.56
  5. Step 5: Solve for x
    x = 10,399,090,114.56/128,748.80
  6. Step 6: Final answer
    x = 80,770.38

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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.