Home / 85,536,047.70-128,052,129.15-80,553,186.90

Finding the Fourth Proportional to 85,536,047.70, 128,052,129.15 and 80,553,186.90

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Solution

The fourth proportional to 85,536,047.70, 128,052,129.15 and 80,553,186.90 is: 120,592,514.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,047.70 : 128,052,129.15 = 80,553,186.90 : x
  2. Step 2: Convert to fraction form
    85,536,047.70/128,052,129.15 = 80,553,186.90/x
  3. Step 3: Cross multiply
    85,536,047.70x = 128,052,129.15 × 80,553,186.90
  4. Step 4: Simplify right side
    85,536,047.70x = 10,315,007,092,362,890
  5. Step 5: Solve for x
    x = 10,315,007,092,362,890/85,536,047.70
  6. Step 6: Final answer
    x = 120,592,514.73

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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.