Home / 210,282.89-315,393.20-68,140.58

Finding the Fourth Proportional to 210,282.89, 315,393.20 and 68,140.58

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Solution

The fourth proportional to 210,282.89, 315,393.20 and 68,140.58 is: 102,200.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,282.89 : 315,393.20 = 68,140.58 : x
  2. Step 2: Convert to fraction form
    210,282.89/315,393.20 = 68,140.58/x
  3. Step 3: Cross multiply
    210,282.89x = 315,393.20 × 68,140.58
  4. Step 4: Simplify right side
    210,282.89x = 21,491,076,279.36
  5. Step 5: Solve for x
    x = 21,491,076,279.36/210,282.89
  6. Step 6: Final answer
    x = 102,200.78

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1.5x scale

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.