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Finding the Fourth Proportional to 154,519.98, 213,264.27 and 87,451.98

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Solution

The fourth proportional to 154,519.98, 213,264.27 and 87,451.98 is: 120,698.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,519.98 : 213,264.27 = 87,451.98 : x
  2. Step 2: Convert to fraction form
    154,519.98/213,264.27 = 87,451.98/x
  3. Step 3: Cross multiply
    154,519.98x = 213,264.27 × 87,451.98
  4. Step 4: Simplify right side
    154,519.98x = 18,650,382,674.75
  5. Step 5: Solve for x
    x = 18,650,382,674.75/154,519.98
  6. Step 6: Final answer
    x = 120,698.84

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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.