Home / 149,410.32-206,178.87-81,427.11

Finding the Fourth Proportional to 149,410.32, 206,178.87 and 81,427.11

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Solution

The fourth proportional to 149,410.32, 206,178.87 and 81,427.11 is: 112,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,410.32 : 206,178.87 = 81,427.11 : x
  2. Step 2: Convert to fraction form
    149,410.32/206,178.87 = 81,427.11/x
  3. Step 3: Cross multiply
    149,410.32x = 206,178.87 × 81,427.11
  4. Step 4: Simplify right side
    149,410.32x = 16,788,549,527.17
  5. Step 5: Solve for x
    x = 16,788,549,527.17/149,410.32
  6. Step 6: Final answer
    x = 112,365.39

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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.