Home / 210,631.52-290,823.72-130,169.36

Finding the Fourth Proportional to 210,631.52, 290,823.72 and 130,169.36

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Solution

The fourth proportional to 210,631.52, 290,823.72 and 130,169.36 is: 179,727.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,631.52 : 290,823.72 = 130,169.36 : x
  2. Step 2: Convert to fraction form
    210,631.52/290,823.72 = 130,169.36/x
  3. Step 3: Cross multiply
    210,631.52x = 290,823.72 × 130,169.36
  4. Step 4: Simplify right side
    210,631.52x = 37,856,337,744.14
  5. Step 5: Solve for x
    x = 37,856,337,744.14/210,631.52
  6. Step 6: Final answer
    x = 179,727.79

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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.