Home / 149,043.84-205,678.47-81,059.34

Finding the Fourth Proportional to 149,043.84, 205,678.47 and 81,059.34

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Solution

The fourth proportional to 149,043.84, 205,678.47 and 81,059.34 is: 111,860.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,043.84 : 205,678.47 = 81,059.34 : x
  2. Step 2: Convert to fraction form
    149,043.84/205,678.47 = 81,059.34/x
  3. Step 3: Cross multiply
    149,043.84x = 205,678.47 × 81,059.34
  4. Step 4: Simplify right side
    149,043.84x = 16,672,161,030.41
  5. Step 5: Solve for x
    x = 16,672,161,030.41/149,043.84
  6. Step 6: Final answer
    x = 111,860.79

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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.