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Finding the Fourth Proportional to 154,713.38, 213,504.46 and 87,645.38

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Solution

The fourth proportional to 154,713.38, 213,504.46 and 87,645.38 is: 120,950.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,713.38 : 213,504.46 = 87,645.38 : x
  2. Step 2: Convert to fraction form
    154,713.38/213,504.46 = 87,645.38/x
  3. Step 3: Cross multiply
    154,713.38x = 213,504.46 × 87,645.38
  4. Step 4: Simplify right side
    154,713.38x = 18,712,679,528.39
  5. Step 5: Solve for x
    x = 18,712,679,528.39/154,713.38
  6. Step 6: Final answer
    x = 120,950.62

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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.