Home / 213,063.23-319,716.95-86,680.14

Finding the Fourth Proportional to 213,063.23, 319,716.95 and 86,680.14

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Solution

The fourth proportional to 213,063.23, 319,716.95 and 86,680.14 is: 130,069.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,063.23 : 319,716.95 = 86,680.14 : x
  2. Step 2: Convert to fraction form
    213,063.23/319,716.95 = 86,680.14/x
  3. Step 3: Cross multiply
    213,063.23x = 319,716.95 × 86,680.14
  4. Step 4: Simplify right side
    213,063.23x = 27,713,110,677.32
  5. Step 5: Solve for x
    x = 27,713,110,677.32/213,063.23
  6. Step 6: Final answer
    x = 130,069.89

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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.