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Finding the Fourth Proportional to 89,400.60, 134,100.90 and 80,069.40

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Solution

The fourth proportional to 89,400.60, 134,100.90 and 80,069.40 is: 120,104.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,400.60 : 134,100.90 = 80,069.40 : x
  2. Step 2: Convert to fraction form
    89,400.60/134,100.90 = 80,069.40/x
  3. Step 3: Cross multiply
    89,400.60x = 134,100.90 × 80,069.40
  4. Step 4: Simplify right side
    89,400.60x = 10,737,378,602.46
  5. Step 5: Solve for x
    x = 10,737,378,602.46/89,400.60
  6. Step 6: Final answer
    x = 120,104.10

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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.