Home / 149,400.39-206,172.57-81,417.42

Finding the Fourth Proportional to 149,400.39, 206,172.57 and 81,417.42

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Solution

The fourth proportional to 149,400.39, 206,172.57 and 81,417.42 is: 112,356.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,400.39 : 206,172.57 = 81,417.42 : x
  2. Step 2: Convert to fraction form
    149,400.39/206,172.57 = 81,417.42/x
  3. Step 3: Cross multiply
    149,400.39x = 206,172.57 × 81,417.42
  4. Step 4: Simplify right side
    149,400.39x = 16,786,038,724.17
  5. Step 5: Solve for x
    x = 16,786,038,724.17/149,400.39
  6. Step 6: Final answer
    x = 112,356.06

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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.