Home / 149,404.34-206,178.02-81,421.33

Finding the Fourth Proportional to 149,404.34, 206,178.02 and 81,421.33

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Solution

The fourth proportional to 149,404.34, 206,178.02 and 81,421.33 is: 112,361.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,404.34 : 206,178.02 = 81,421.33 : x
  2. Step 2: Convert to fraction form
    149,404.34/206,178.02 = 81,421.33/x
  3. Step 3: Cross multiply
    149,404.34x = 206,178.02 × 81,421.33
  4. Step 4: Simplify right side
    149,404.34x = 16,787,287,167.17
  5. Step 5: Solve for x
    x = 16,787,287,167.17/149,404.34
  6. Step 6: Final answer
    x = 112,361.45

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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.