Home / 211,456.27-291,729.58-134,978.23

Finding the Fourth Proportional to 211,456.27, 291,729.58 and 134,978.23

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Solution

The fourth proportional to 211,456.27, 291,729.58 and 134,978.23 is: 186,218.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,456.27 : 291,729.58 = 134,978.23 : x
  2. Step 2: Convert to fraction form
    211,456.27/291,729.58 = 134,978.23/x
  3. Step 3: Cross multiply
    211,456.27x = 291,729.58 × 134,978.23
  4. Step 4: Simplify right side
    211,456.27x = 39,377,142,347.04
  5. Step 5: Solve for x
    x = 39,377,142,347.04/211,456.27
  6. Step 6: Final answer
    x = 186,218.84

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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.