Home / 210,981.38-316,364.40-68,735.18

Finding the Fourth Proportional to 210,981.38, 316,364.40 and 68,735.18

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Solution

The fourth proportional to 210,981.38, 316,364.40 and 68,735.18 is: 103,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,981.38 : 316,364.40 = 68,735.18 : x
  2. Step 2: Convert to fraction form
    210,981.38/316,364.40 = 68,735.18/x
  3. Step 3: Cross multiply
    210,981.38x = 316,364.40 × 68,735.18
  4. Step 4: Simplify right side
    210,981.38x = 21,745,364,770.50
  5. Step 5: Solve for x
    x = 21,745,364,770.50/210,981.38
  6. Step 6: Final answer
    x = 103,067.70

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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.