Home / 12,140,143.80-18,210,215.70-11,148,120.60

Finding the Fourth Proportional to 12,140,143.80, 18,210,215.70 and 11,148,120.60

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Solution

The fourth proportional to 12,140,143.80, 18,210,215.70 and 11,148,120.60 is: 16,722,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140,143.80 : 18,210,215.70 = 11,148,120.60 : x
  2. Step 2: Convert to fraction form
    12,140,143.80/18,210,215.70 = 11,148,120.60/x
  3. Step 3: Cross multiply
    12,140,143.80x = 18,210,215.70 × 11,148,120.60
  4. Step 4: Simplify right side
    12,140,143.80x = 203,009,680,775,613.41
  5. Step 5: Solve for x
    x = 203,009,680,775,613.41/12,140,143.80
  6. Step 6: Final answer
    x = 16,722,180.90

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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.