Home / 140,904.60-211,385.70-47,419.80

Finding the Fourth Proportional to 140,904.60, 211,385.70 and 47,419.80

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Solution

The fourth proportional to 140,904.60, 211,385.70 and 47,419.80 is: 71,139.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,904.60 : 211,385.70 = 47,419.80 : x
  2. Step 2: Convert to fraction form
    140,904.60/211,385.70 = 47,419.80/x
  3. Step 3: Cross multiply
    140,904.60x = 211,385.70 × 47,419.80
  4. Step 4: Simplify right side
    140,904.60x = 10,023,867,616.86
  5. Step 5: Solve for x
    x = 10,023,867,616.86/140,904.60
  6. Step 6: Final answer
    x = 71,139.39

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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.