Home / 8,112,243.10-12,168,364.65-2,129,215.90

Finding the Fourth Proportional to 8,112,243.10, 12,168,364.65 and 2,129,215.90

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Solution

The fourth proportional to 8,112,243.10, 12,168,364.65 and 2,129,215.90 is: 3,193,823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112,243.10 : 12,168,364.65 = 2,129,215.90 : x
  2. Step 2: Convert to fraction form
    8,112,243.10/12,168,364.65 = 2,129,215.90/x
  3. Step 3: Cross multiply
    8,112,243.10x = 12,168,364.65 × 2,129,215.90
  4. Step 4: Simplify right side
    8,112,243.10x = 25,909,075,489,777.93
  5. Step 5: Solve for x
    x = 25,909,075,489,777.93/8,112,243.10
  6. Step 6: Final answer
    x = 3,193,823.85

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Similar ratio
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1.5x scale

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.