Home / 211,089.96-291,310.74-115,605.72

Finding the Fourth Proportional to 211,089.96, 291,310.74 and 115,605.72

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Solution

The fourth proportional to 211,089.96, 291,310.74 and 115,605.72 is: 159,539.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,089.96 : 291,310.74 = 115,605.72 : x
  2. Step 2: Convert to fraction form
    211,089.96/291,310.74 = 115,605.72/x
  3. Step 3: Cross multiply
    211,089.96x = 291,310.74 × 115,605.72
  4. Step 4: Simplify right side
    211,089.96x = 33,677,187,841.43
  5. Step 5: Solve for x
    x = 33,677,187,841.43/211,089.96
  6. Step 6: Final answer
    x = 159,539.51

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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.