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Finding the Fourth Proportional to 148,493, 204,920.38 and 81,426.44

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Solution

The fourth proportional to 148,493, 204,920.38 and 81,426.44 is: 112,368.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,493 : 204,920.38 = 81,426.44 : x
  2. Step 2: Convert to fraction form
    148,493/204,920.38 = 81,426.44/x
  3. Step 3: Cross multiply
    148,493x = 204,920.38 × 81,426.44
  4. Step 4: Simplify right side
    148,493x = 16,685,937,026.85
  5. Step 5: Solve for x
    x = 16,685,937,026.85/148,493
  6. Step 6: Final answer
    x = 112,368.51

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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.