Home / 212,664.36-319,045.92-72,424.20

Finding the Fourth Proportional to 212,664.36, 319,045.92 and 72,424.20

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Solution

The fourth proportional to 212,664.36, 319,045.92 and 72,424.20 is: 108,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,664.36 : 319,045.92 = 72,424.20 : x
  2. Step 2: Convert to fraction form
    212,664.36/319,045.92 = 72,424.20/x
  3. Step 3: Cross multiply
    212,664.36x = 319,045.92 × 72,424.20
  4. Step 4: Simplify right side
    212,664.36x = 23,106,645,519.26
  5. Step 5: Solve for x
    x = 23,106,645,519.26/212,664.36
  6. Step 6: Final answer
    x = 108,653.12

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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.