Home / 131,563.11-181,543.10-77,850.39

Finding the Fourth Proportional to 131,563.11, 181,543.10 and 77,850.39

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Solution

The fourth proportional to 131,563.11, 181,543.10 and 77,850.39 is: 107,425.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,563.11 : 181,543.10 = 77,850.39 : x
  2. Step 2: Convert to fraction form
    131,563.11/181,543.10 = 77,850.39/x
  3. Step 3: Cross multiply
    131,563.11x = 181,543.10 × 77,850.39
  4. Step 4: Simplify right side
    131,563.11x = 14,133,200,747.56
  5. Step 5: Solve for x
    x = 14,133,200,747.56/131,563.11
  6. Step 6: Final answer
    x = 107,425.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.