Home / 127,740.41-191,638.76-39,000.86

Finding the Fourth Proportional to 127,740.41, 191,638.76 and 39,000.86

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Solution

The fourth proportional to 127,740.41, 191,638.76 and 39,000.86 is: 58,509.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,740.41 : 191,638.76 = 39,000.86 : x
  2. Step 2: Convert to fraction form
    127,740.41/191,638.76 = 39,000.86/x
  3. Step 3: Cross multiply
    127,740.41x = 191,638.76 × 39,000.86
  4. Step 4: Simplify right side
    127,740.41x = 7,474,076,449.33
  5. Step 5: Solve for x
    x = 7,474,076,449.33/127,740.41
  6. Step 6: Final answer
    x = 58,509.88

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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.