Home / 149,372.84-206,139.74-81,395.42

Finding the Fourth Proportional to 149,372.84, 206,139.74 and 81,395.42

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Solution

The fourth proportional to 149,372.84, 206,139.74 and 81,395.42 is: 112,328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,372.84 : 206,139.74 = 81,395.42 : x
  2. Step 2: Convert to fraction form
    149,372.84/206,139.74 = 81,395.42/x
  3. Step 3: Cross multiply
    149,372.84x = 206,139.74 × 81,395.42
  4. Step 4: Simplify right side
    149,372.84x = 16,778,829,278.32
  5. Step 5: Solve for x
    x = 16,778,829,278.32/149,372.84
  6. Step 6: Final answer
    x = 112,328.51

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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.