Home / 212,873.25-319,309.89-86,582.19

Finding the Fourth Proportional to 212,873.25, 319,309.89 and 86,582.19

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Solution

The fourth proportional to 212,873.25, 319,309.89 and 86,582.19 is: 129,873.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,873.25 : 319,309.89 = 86,582.19 : x
  2. Step 2: Convert to fraction form
    212,873.25/319,309.89 = 86,582.19/x
  3. Step 3: Cross multiply
    212,873.25x = 319,309.89 × 86,582.19
  4. Step 4: Simplify right side
    212,873.25x = 27,646,549,564.86
  5. Step 5: Solve for x
    x = 27,646,549,564.86/212,873.25
  6. Step 6: Final answer
    x = 129,873.29

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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.