Home / 211,158.66-291,399.11-115,665.74

Finding the Fourth Proportional to 211,158.66, 291,399.11 and 115,665.74

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Solution

The fourth proportional to 211,158.66, 291,399.11 and 115,665.74 is: 159,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,158.66 : 291,399.11 = 115,665.74 : x
  2. Step 2: Convert to fraction form
    211,158.66/291,399.11 = 115,665.74/x
  3. Step 3: Cross multiply
    211,158.66x = 291,399.11 × 115,665.74
  4. Step 4: Simplify right side
    211,158.66x = 33,704,891,658.17
  5. Step 5: Solve for x
    x = 33,704,891,658.17/211,158.66
  6. Step 6: Final answer
    x = 159,618.80

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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.