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Finding the Fourth Proportional to 128,602.79, 192,770.23 and 53,766.38

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Solution

The fourth proportional to 128,602.79, 192,770.23 and 53,766.38 is: 80,593.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,602.79 : 192,770.23 = 53,766.38 : x
  2. Step 2: Convert to fraction form
    128,602.79/192,770.23 = 53,766.38/x
  3. Step 3: Cross multiply
    128,602.79x = 192,770.23 × 53,766.38
  4. Step 4: Simplify right side
    128,602.79x = 10,364,557,887.19
  5. Step 5: Solve for x
    x = 10,364,557,887.19/128,602.79
  6. Step 6: Final answer
    x = 80,593.57

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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.