Home / 149,404.84-206,178.71-81,421.83

Finding the Fourth Proportional to 149,404.84, 206,178.71 and 81,421.83

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Solution

The fourth proportional to 149,404.84, 206,178.71 and 81,421.83 is: 112,362.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,404.84 : 206,178.71 = 81,421.83 : x
  2. Step 2: Convert to fraction form
    149,404.84/206,178.71 = 81,421.83/x
  3. Step 3: Cross multiply
    149,404.84x = 206,178.71 × 81,421.83
  4. Step 4: Simplify right side
    149,404.84x = 16,787,446,437.24
  5. Step 5: Solve for x
    x = 16,787,446,437.24/149,404.84
  6. Step 6: Final answer
    x = 112,362.14

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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.