Home / 211,170.63-291,415.51-115,680.72

Finding the Fourth Proportional to 211,170.63, 291,415.51 and 115,680.72

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Solution

The fourth proportional to 211,170.63, 291,415.51 and 115,680.72 is: 159,639.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,170.63 : 291,415.51 = 115,680.72 : x
  2. Step 2: Convert to fraction form
    211,170.63/291,415.51 = 115,680.72/x
  3. Step 3: Cross multiply
    211,170.63x = 291,415.51 × 115,680.72
  4. Step 4: Simplify right side
    211,170.63x = 33,711,156,015.97
  5. Step 5: Solve for x
    x = 33,711,156,015.97/211,170.63
  6. Step 6: Final answer
    x = 159,639.42

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1.5x scale

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.