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Finding the Fourth Proportional to 140,830.60, 211,277.90 and 47,345.80

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Solution

The fourth proportional to 140,830.60, 211,277.90 and 47,345.80 is: 71,029.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,830.60 : 211,277.90 = 47,345.80 : x
  2. Step 2: Convert to fraction form
    140,830.60/211,277.90 = 47,345.80/x
  3. Step 3: Cross multiply
    140,830.60x = 211,277.90 × 47,345.80
  4. Step 4: Simplify right side
    140,830.60x = 10,003,121,197.82
  5. Step 5: Solve for x
    x = 10,003,121,197.82/140,830.60
  6. Step 6: Final answer
    x = 71,029.46

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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.