Home / 127,986.24-191,979.30-68,740.40

Finding the Fourth Proportional to 127,986.24, 191,979.30 and 68,740.40

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Solution

The fourth proportional to 127,986.24, 191,979.30 and 68,740.40 is: 103,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,986.24 : 191,979.30 = 68,740.40 : x
  2. Step 2: Convert to fraction form
    127,986.24/191,979.30 = 68,740.40/x
  3. Step 3: Cross multiply
    127,986.24x = 191,979.30 × 68,740.40
  4. Step 4: Simplify right side
    127,986.24x = 13,196,733,873.72
  5. Step 5: Solve for x
    x = 13,196,733,873.72/127,986.24
  6. Step 6: Final answer
    x = 103,110.57

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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.