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Finding the Fourth Proportional to 154,713.63, 213,504.81 and 87,645.63

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Solution

The fourth proportional to 154,713.63, 213,504.81 and 87,645.63 is: 120,950.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,713.63 : 213,504.81 = 87,645.63 : x
  2. Step 2: Convert to fraction form
    154,713.63/213,504.81 = 87,645.63/x
  3. Step 3: Cross multiply
    154,713.63x = 213,504.81 × 87,645.63
  4. Step 4: Simplify right side
    154,713.63x = 18,712,763,580.48
  5. Step 5: Solve for x
    x = 18,712,763,580.48/154,713.63
  6. Step 6: Final answer
    x = 120,950.97

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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.