Home / 85,536,109.10-128,304,163.65-80,497,261.10

Finding the Fourth Proportional to 85,536,109.10, 128,304,163.65 and 80,497,261.10

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Solution

The fourth proportional to 85,536,109.10, 128,304,163.65 and 80,497,261.10 is: 120,745,891.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,109.10 : 128,304,163.65 = 80,497,261.10 : x
  2. Step 2: Convert to fraction form
    85,536,109.10/128,304,163.65 = 80,497,261.10/x
  3. Step 3: Cross multiply
    85,536,109.10x = 128,304,163.65 × 80,497,261.10
  4. Step 4: Simplify right side
    85,536,109.10x = 10,328,133,761,551,178
  5. Step 5: Solve for x
    x = 10,328,133,761,551,178/85,536,109.10
  6. Step 6: Final answer
    x = 120,745,891.65

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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.