Home / 127,979.15-191,968.81-53,079.19

Finding the Fourth Proportional to 127,979.15, 191,968.81 and 53,079.19

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Solution

The fourth proportional to 127,979.15, 191,968.81 and 53,079.19 is: 79,618.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,979.15 : 191,968.81 = 53,079.19 : x
  2. Step 2: Convert to fraction form
    127,979.15/191,968.81 = 53,079.19/x
  3. Step 3: Cross multiply
    127,979.15x = 191,968.81 × 53,079.19
  4. Step 4: Simplify right side
    127,979.15x = 10,189,548,940.06
  5. Step 5: Solve for x
    x = 10,189,548,940.06/127,979.15
  6. Step 6: Final answer
    x = 79,618.82

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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.