Home / 129,705.07-193,268.15-115,556.38

Finding the Fourth Proportional to 129,705.07, 193,268.15 and 115,556.38

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Solution

The fourth proportional to 129,705.07, 193,268.15 and 115,556.38 is: 172,185.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,705.07 : 193,268.15 = 115,556.38 : x
  2. Step 2: Convert to fraction form
    129,705.07/193,268.15 = 115,556.38/x
  3. Step 3: Cross multiply
    129,705.07x = 193,268.15 × 115,556.38
  4. Step 4: Simplify right side
    129,705.07x = 22,333,366,239.17
  5. Step 5: Solve for x
    x = 22,333,366,239.17/129,705.07
  6. Step 6: Final answer
    x = 172,185.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.