Home / 81,975.10-122,962.65-67,200.70

Finding the Fourth Proportional to 81,975.10, 122,962.65 and 67,200.70

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Solution

The fourth proportional to 81,975.10, 122,962.65 and 67,200.70 is: 100,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,975.10 : 122,962.65 = 67,200.70 : x
  2. Step 2: Convert to fraction form
    81,975.10/122,962.65 = 67,200.70/x
  3. Step 3: Cross multiply
    81,975.10x = 122,962.65 × 67,200.70
  4. Step 4: Simplify right side
    81,975.10x = 8,263,176,153.86
  5. Step 5: Solve for x
    x = 8,263,176,153.86/81,975.10
  6. Step 6: Final answer
    x = 100,801.05

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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.