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Finding the Fourth Proportional to 109,397.80, 150,868.74 and 71,692.84

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Solution

The fourth proportional to 109,397.80, 150,868.74 and 71,692.84 is: 98,870.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,397.80 : 150,868.74 = 71,692.84 : x
  2. Step 2: Convert to fraction form
    109,397.80/150,868.74 = 71,692.84/x
  3. Step 3: Cross multiply
    109,397.80x = 150,868.74 × 71,692.84
  4. Step 4: Simplify right side
    109,397.80x = 10,816,208,437.82
  5. Step 5: Solve for x
    x = 10,816,208,437.82/109,397.80
  6. Step 6: Final answer
    x = 98,870.44

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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.