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Finding the Fourth Proportional to 127,832.70, 191,835.45 and 71,672.70

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Solution

The fourth proportional to 127,832.70, 191,835.45 and 71,672.70 is: 107,557.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,832.70 : 191,835.45 = 71,672.70 : x
  2. Step 2: Convert to fraction form
    127,832.70/191,835.45 = 71,672.70/x
  3. Step 3: Cross multiply
    127,832.70x = 191,835.45 × 71,672.70
  4. Step 4: Simplify right side
    127,832.70x = 13,749,364,657.22
  5. Step 5: Solve for x
    x = 13,749,364,657.22/127,832.70
  6. Step 6: Final answer
    x = 107,557.49

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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.