Home / 127,890.40-191,835.60-39,144.10

Finding the Fourth Proportional to 127,890.40, 191,835.60 and 39,144.10

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Solution

The fourth proportional to 127,890.40, 191,835.60 and 39,144.10 is: 58,716.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,890.40 : 191,835.60 = 39,144.10 : x
  2. Step 2: Convert to fraction form
    127,890.40/191,835.60 = 39,144.10/x
  3. Step 3: Cross multiply
    127,890.40x = 191,835.60 × 39,144.10
  4. Step 4: Simplify right side
    127,890.40x = 7,509,231,909.96
  5. Step 5: Solve for x
    x = 7,509,231,909.96/127,890.40
  6. Step 6: Final answer
    x = 58,716.15

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Similar ratio
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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.