Home / 127,739.91-191,638.01-39,000.36

Finding the Fourth Proportional to 127,739.91, 191,638.01 and 39,000.36

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Solution

The fourth proportional to 127,739.91, 191,638.01 and 39,000.36 is: 58,509.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,739.91 : 191,638.01 = 39,000.36 : x
  2. Step 2: Convert to fraction form
    127,739.91/191,638.01 = 39,000.36/x
  3. Step 3: Cross multiply
    127,739.91x = 191,638.01 × 39,000.36
  4. Step 4: Simplify right side
    127,739.91x = 7,473,951,379.68
  5. Step 5: Solve for x
    x = 7,473,951,379.68/127,739.91
  6. Step 6: Final answer
    x = 58,509.13

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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.