Home / 213,168.96-319,565.27-86,914.80

Finding the Fourth Proportional to 213,168.96, 319,565.27 and 86,914.80

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Solution

The fourth proportional to 213,168.96, 319,565.27 and 86,914.80 is: 130,295.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,168.96 : 319,565.27 = 86,914.80 : x
  2. Step 2: Convert to fraction form
    213,168.96/319,565.27 = 86,914.80/x
  3. Step 3: Cross multiply
    213,168.96x = 319,565.27 × 86,914.80
  4. Step 4: Simplify right side
    213,168.96x = 27,774,951,094.42
  5. Step 5: Solve for x
    x = 27,774,951,094.42/213,168.96
  6. Step 6: Final answer
    x = 130,295.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.