Home / 148,400.25-204,805.31-81,345.21

Finding the Fourth Proportional to 148,400.25, 204,805.31 and 81,345.21

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Solution

The fourth proportional to 148,400.25, 204,805.31 and 81,345.21 is: 112,263.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,400.25 : 204,805.31 = 81,345.21 : x
  2. Step 2: Convert to fraction form
    148,400.25/204,805.31 = 81,345.21/x
  3. Step 3: Cross multiply
    148,400.25x = 204,805.31 × 81,345.21
  4. Step 4: Simplify right side
    148,400.25x = 16,659,930,544.34
  5. Step 5: Solve for x
    x = 16,659,930,544.34/148,400.25
  6. Step 6: Final answer
    x = 112,263.49

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1.5x scale

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.