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Finding the Fourth Proportional to 140,912.60, 211,397.70 and 47,427.80

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Solution

The fourth proportional to 140,912.60, 211,397.70 and 47,427.80 is: 71,151.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,912.60 : 211,397.70 = 47,427.80 : x
  2. Step 2: Convert to fraction form
    140,912.60/211,397.70 = 47,427.80/x
  3. Step 3: Cross multiply
    140,912.60x = 211,397.70 × 47,427.80
  4. Step 4: Simplify right side
    140,912.60x = 10,026,127,836.06
  5. Step 5: Solve for x
    x = 10,026,127,836.06/140,912.60
  6. Step 6: Final answer
    x = 71,151.39

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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.