Home / 149,184.96-205,872-81,200.40

Finding the Fourth Proportional to 149,184.96, 205,872 and 81,200.40

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Solution

The fourth proportional to 149,184.96, 205,872 and 81,200.40 is: 112,054.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,184.96 : 205,872 = 81,200.40 : x
  2. Step 2: Convert to fraction form
    149,184.96/205,872 = 81,200.40/x
  3. Step 3: Cross multiply
    149,184.96x = 205,872 × 81,200.40
  4. Step 4: Simplify right side
    149,184.96x = 16,716,888,748.80
  5. Step 5: Solve for x
    x = 16,716,888,748.80/149,184.96
  6. Step 6: Final answer
    x = 112,054.79

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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.