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Finding the Fourth Proportional to 120,844.80, 181,267.20 and 89,740.80

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Solution

The fourth proportional to 120,844.80, 181,267.20 and 89,740.80 is: 134,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,844.80 : 181,267.20 = 89,740.80 : x
  2. Step 2: Convert to fraction form
    120,844.80/181,267.20 = 89,740.80/x
  3. Step 3: Cross multiply
    120,844.80x = 181,267.20 × 89,740.80
  4. Step 4: Simplify right side
    120,844.80x = 16,267,063,541.76
  5. Step 5: Solve for x
    x = 16,267,063,541.76/120,844.80
  6. Step 6: Final answer
    x = 134,611.20

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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.