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Finding the Fourth Proportional to 127,015.80, 190,484.78 and 87,824.76

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Solution

The fourth proportional to 127,015.80, 190,484.78 and 87,824.76 is: 131,710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,015.80 : 190,484.78 = 87,824.76 : x
  2. Step 2: Convert to fraction form
    127,015.80/190,484.78 = 87,824.76/x
  3. Step 3: Cross multiply
    127,015.80x = 190,484.78 × 87,824.76
  4. Step 4: Simplify right side
    127,015.80x = 16,729,280,087.15
  5. Step 5: Solve for x
    x = 16,729,280,087.15/127,015.80
  6. Step 6: Final answer
    x = 131,710.23

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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.