Home / 213,015.14-319,291.65-105,019.34

Finding the Fourth Proportional to 213,015.14, 319,291.65 and 105,019.34

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Solution

The fourth proportional to 213,015.14, 319,291.65 and 105,019.34 is: 157,415.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,015.14 : 319,291.65 = 105,019.34 : x
  2. Step 2: Convert to fraction form
    213,015.14/319,291.65 = 105,019.34/x
  3. Step 3: Cross multiply
    213,015.14x = 319,291.65 × 105,019.34
  4. Step 4: Simplify right side
    213,015.14x = 33,531,798,350.51
  5. Step 5: Solve for x
    x = 33,531,798,350.51/213,015.14
  6. Step 6: Final answer
    x = 157,415.09

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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.