Home / 210,966.35-316,452.78-68,811.02

Finding the Fourth Proportional to 210,966.35, 316,452.78 and 68,811.02

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Solution

The fourth proportional to 210,966.35, 316,452.78 and 68,811.02 is: 103,217.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,966.35 : 316,452.78 = 68,811.02 : x
  2. Step 2: Convert to fraction form
    210,966.35/316,452.78 = 68,811.02/x
  3. Step 3: Cross multiply
    210,966.35x = 316,452.78 × 68,811.02
  4. Step 4: Simplify right side
    210,966.35x = 21,775,438,573.64
  5. Step 5: Solve for x
    x = 21,775,438,573.64/210,966.35
  6. Step 6: Final answer
    x = 103,217.59

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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.