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Finding the Fourth Proportional to 154,692.58, 213,427.83 and 86,700.12

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Solution

The fourth proportional to 154,692.58, 213,427.83 and 86,700.12 is: 119,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,692.58 : 213,427.83 = 86,700.12 : x
  2. Step 2: Convert to fraction form
    154,692.58/213,427.83 = 86,700.12/x
  3. Step 3: Cross multiply
    154,692.58x = 213,427.83 × 86,700.12
  4. Step 4: Simplify right side
    154,692.58x = 18,504,218,472.34
  5. Step 5: Solve for x
    x = 18,504,218,472.34/154,692.58
  6. Step 6: Final answer
    x = 119,619.30

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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.