Home / 211,158.77-291,399.17-115,668.90

Finding the Fourth Proportional to 211,158.77, 291,399.17 and 115,668.90

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Solution

The fourth proportional to 211,158.77, 291,399.17 and 115,668.90 is: 159,623.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,158.77 : 291,399.17 = 115,668.90 : x
  2. Step 2: Convert to fraction form
    211,158.77/291,399.17 = 115,668.90/x
  3. Step 3: Cross multiply
    211,158.77x = 291,399.17 × 115,668.90
  4. Step 4: Simplify right side
    211,158.77x = 33,705,820,876.47
  5. Step 5: Solve for x
    x = 33,705,820,876.47/211,158.77
  6. Step 6: Final answer
    x = 159,623.12

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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.