Home / 135,142.20-186,501.48-89,741.88

Finding the Fourth Proportional to 135,142.20, 186,501.48 and 89,741.88

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Solution

The fourth proportional to 135,142.20, 186,501.48 and 89,741.88 is: 123,847.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,142.20 : 186,501.48 = 89,741.88 : x
  2. Step 2: Convert to fraction form
    135,142.20/186,501.48 = 89,741.88/x
  3. Step 3: Cross multiply
    135,142.20x = 186,501.48 × 89,741.88
  4. Step 4: Simplify right side
    135,142.20x = 16,736,993,437.98
  5. Step 5: Solve for x
    x = 16,736,993,437.98/135,142.20
  6. Step 6: Final answer
    x = 123,847.28

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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.