Home / 210,783.12-290,891.35-124,791.45

Finding the Fourth Proportional to 210,783.12, 290,891.35 and 124,791.45

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Solution

The fourth proportional to 210,783.12, 290,891.35 and 124,791.45 is: 172,218.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,783.12 : 290,891.35 = 124,791.45 : x
  2. Step 2: Convert to fraction form
    210,783.12/290,891.35 = 124,791.45/x
  3. Step 3: Cross multiply
    210,783.12x = 290,891.35 × 124,791.45
  4. Step 4: Simplify right side
    210,783.12x = 36,300,753,358.96
  5. Step 5: Solve for x
    x = 36,300,753,358.96/210,783.12
  6. Step 6: Final answer
    x = 172,218.50

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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.