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Finding the Fourth Proportional to 136,737.62, 188,692.99 and 85,777.79

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Solution

The fourth proportional to 136,737.62, 188,692.99 and 85,777.79 is: 118,370.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,737.62 : 188,692.99 = 85,777.79 : x
  2. Step 2: Convert to fraction form
    136,737.62/188,692.99 = 85,777.79/x
  3. Step 3: Cross multiply
    136,737.62x = 188,692.99 × 85,777.79
  4. Step 4: Simplify right side
    136,737.62x = 16,185,666,995.28
  5. Step 5: Solve for x
    x = 16,185,666,995.28/136,737.62
  6. Step 6: Final answer
    x = 118,370.26

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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.