Home / 136,154.52-187,816.55-81,692.60

Finding the Fourth Proportional to 136,154.52, 187,816.55 and 81,692.60

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Solution

The fourth proportional to 136,154.52, 187,816.55 and 81,692.60 is: 112,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,154.52 : 187,816.55 = 81,692.60 : x
  2. Step 2: Convert to fraction form
    136,154.52/187,816.55 = 81,692.60/x
  3. Step 3: Cross multiply
    136,154.52x = 187,816.55 × 81,692.60
  4. Step 4: Simplify right side
    136,154.52x = 15,343,220,944.98
  5. Step 5: Solve for x
    x = 15,343,220,944.98/136,154.52
  6. Step 6: Final answer
    x = 112,689.77

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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.