Home / 85,412,135.10-128,118,202.65-84,615,872.70

Finding the Fourth Proportional to 85,412,135.10, 128,118,202.65 and 84,615,872.70

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Solution

The fourth proportional to 85,412,135.10, 128,118,202.65 and 84,615,872.70 is: 126,923,809.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,412,135.10 : 128,118,202.65 = 84,615,872.70 : x
  2. Step 2: Convert to fraction form
    85,412,135.10/128,118,202.65 = 84,615,872.70/x
  3. Step 3: Cross multiply
    85,412,135.10x = 128,118,202.65 × 84,615,872.70
  4. Step 4: Simplify right side
    85,412,135.10x = 10,840,833,525,985,204
  5. Step 5: Solve for x
    x = 10,840,833,525,985,204/85,412,135.10
  6. Step 6: Final answer
    x = 126,923,809.05

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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.