Home / 140,778.92-211,170-47,284.68

Finding the Fourth Proportional to 140,778.92, 211,170 and 47,284.68

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Solution

The fourth proportional to 140,778.92, 211,170 and 47,284.68 is: 70,927.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,778.92 : 211,170 = 47,284.68 : x
  2. Step 2: Convert to fraction form
    140,778.92/211,170 = 47,284.68/x
  3. Step 3: Cross multiply
    140,778.92x = 211,170 × 47,284.68
  4. Step 4: Simplify right side
    140,778.92x = 9,985,105,875.60
  5. Step 5: Solve for x
    x = 9,985,105,875.60/140,778.92
  6. Step 6: Final answer
    x = 70,927.56

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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.