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Finding the Fourth Proportional to 88,075.80, 132,113.70 and 81,336.60

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Solution

The fourth proportional to 88,075.80, 132,113.70 and 81,336.60 is: 122,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,075.80 : 132,113.70 = 81,336.60 : x
  2. Step 2: Convert to fraction form
    88,075.80/132,113.70 = 81,336.60/x
  3. Step 3: Cross multiply
    88,075.80x = 132,113.70 × 81,336.60
  4. Step 4: Simplify right side
    88,075.80x = 10,745,679,171.42
  5. Step 5: Solve for x
    x = 10,745,679,171.42/88,075.80
  6. Step 6: Final answer
    x = 122,004.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.