Home / 128,269.40-192,407.40-60,785.60

Finding the Fourth Proportional to 128,269.40, 192,407.40 and 60,785.60

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Solution

The fourth proportional to 128,269.40, 192,407.40 and 60,785.60 is: 91,179.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,269.40 : 192,407.40 = 60,785.60 : x
  2. Step 2: Convert to fraction form
    128,269.40/192,407.40 = 60,785.60/x
  3. Step 3: Cross multiply
    128,269.40x = 192,407.40 × 60,785.60
  4. Step 4: Simplify right side
    128,269.40x = 11,695,598,291.40
  5. Step 5: Solve for x
    x = 11,695,598,291.40/128,269.40
  6. Step 6: Final answer
    x = 91,179.96

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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.