Home / 212,976.63-319,431.09-70,810.08

Finding the Fourth Proportional to 212,976.63, 319,431.09 and 70,810.08

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Solution

The fourth proportional to 212,976.63, 319,431.09 and 70,810.08 is: 106,203.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,976.63 : 319,431.09 = 70,810.08 : x
  2. Step 2: Convert to fraction form
    212,976.63/319,431.09 = 70,810.08/x
  3. Step 3: Cross multiply
    212,976.63x = 319,431.09 × 70,810.08
  4. Step 4: Simplify right side
    212,976.63x = 22,618,941,037.39
  5. Step 5: Solve for x
    x = 22,618,941,037.39/212,976.63
  6. Step 6: Final answer
    x = 106,203.86

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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.