Home / 136,629.68-188,548.56-76,200.40

Finding the Fourth Proportional to 136,629.68, 188,548.56 and 76,200.40

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Solution

The fourth proportional to 136,629.68, 188,548.56 and 76,200.40 is: 105,156.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,629.68 : 188,548.56 = 76,200.40 : x
  2. Step 2: Convert to fraction form
    136,629.68/188,548.56 = 76,200.40/x
  3. Step 3: Cross multiply
    136,629.68x = 188,548.56 × 76,200.40
  4. Step 4: Simplify right side
    136,629.68x = 14,367,475,691.42
  5. Step 5: Solve for x
    x = 14,367,475,691.42/136,629.68
  6. Step 6: Final answer
    x = 105,156.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.