Home / 83,150.40-124,725.60-76,735.20

Finding the Fourth Proportional to 83,150.40, 124,725.60 and 76,735.20

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Solution

The fourth proportional to 83,150.40, 124,725.60 and 76,735.20 is: 115,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,150.40 : 124,725.60 = 76,735.20 : x
  2. Step 2: Convert to fraction form
    83,150.40/124,725.60 = 76,735.20/x
  3. Step 3: Cross multiply
    83,150.40x = 124,725.60 × 76,735.20
  4. Step 4: Simplify right side
    83,150.40x = 9,570,843,861.12
  5. Step 5: Solve for x
    x = 9,570,843,861.12/83,150.40
  6. Step 6: Final answer
    x = 115,102.80

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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.