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Finding the Fourth Proportional to 127,573.50, 190,012.64 and 120,912.06

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Solution

The fourth proportional to 127,573.50, 190,012.64 and 120,912.06 is: 180,090.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,573.50 : 190,012.64 = 120,912.06 : x
  2. Step 2: Convert to fraction form
    127,573.50/190,012.64 = 120,912.06/x
  3. Step 3: Cross multiply
    127,573.50x = 190,012.64 × 120,912.06
  4. Step 4: Simplify right side
    127,573.50x = 22,974,819,123.88
  5. Step 5: Solve for x
    x = 22,974,819,123.88/127,573.50
  6. Step 6: Final answer
    x = 180,090.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.