Home / 131,346.21-181,257.60-77,650.59

Finding the Fourth Proportional to 131,346.21, 181,257.60 and 77,650.59

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Solution

The fourth proportional to 131,346.21, 181,257.60 and 77,650.59 is: 107,157.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,346.21 : 181,257.60 = 77,650.59 : x
  2. Step 2: Convert to fraction form
    131,346.21/181,257.60 = 77,650.59/x
  3. Step 3: Cross multiply
    131,346.21x = 181,257.60 × 77,650.59
  4. Step 4: Simplify right side
    131,346.21x = 14,074,759,581.98
  5. Step 5: Solve for x
    x = 14,074,759,581.98/131,346.21
  6. Step 6: Final answer
    x = 107,157.71

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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.