Home / 129,705.57-193,268.89-115,556.88

Finding the Fourth Proportional to 129,705.57, 193,268.89 and 115,556.88

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Solution

The fourth proportional to 129,705.57, 193,268.89 and 115,556.88 is: 172,186.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,705.57 : 193,268.89 = 115,556.88 : x
  2. Step 2: Convert to fraction form
    129,705.57/193,268.89 = 115,556.88/x
  3. Step 3: Cross multiply
    129,705.57x = 193,268.89 × 115,556.88
  4. Step 4: Simplify right side
    129,705.57x = 22,333,549,929.46
  5. Step 5: Solve for x
    x = 22,333,549,929.46/129,705.57
  6. Step 6: Final answer
    x = 172,186.51

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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.