Home / 211,145.88-291,381.39-115,654.17

Finding the Fourth Proportional to 211,145.88, 291,381.39 and 115,654.17

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Solution

The fourth proportional to 211,145.88, 291,381.39 and 115,654.17 is: 159,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,145.88 : 291,381.39 = 115,654.17 : x
  2. Step 2: Convert to fraction form
    211,145.88/291,381.39 = 115,654.17/x
  3. Step 3: Cross multiply
    211,145.88x = 291,381.39 × 115,654.17
  4. Step 4: Simplify right side
    211,145.88x = 33,699,472,813.90
  5. Step 5: Solve for x
    x = 33,699,472,813.90/211,145.88
  6. Step 6: Final answer
    x = 159,602.80

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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.