Home / 210,960.36-316,443.78-68,805.02

Finding the Fourth Proportional to 210,960.36, 316,443.78 and 68,805.02

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Solution

The fourth proportional to 210,960.36, 316,443.78 and 68,805.02 is: 103,208.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,960.36 : 316,443.78 = 68,805.02 : x
  2. Step 2: Convert to fraction form
    210,960.36/316,443.78 = 68,805.02/x
  3. Step 3: Cross multiply
    210,960.36x = 316,443.78 × 68,805.02
  4. Step 4: Simplify right side
    210,960.36x = 21,772,920,611.78
  5. Step 5: Solve for x
    x = 21,772,920,611.78/210,960.36
  6. Step 6: Final answer
    x = 103,208.59

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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.