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Finding the Fourth Proportional to 120,882.60, 181,323.90 and 120,007.80

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Solution

The fourth proportional to 120,882.60, 181,323.90 and 120,007.80 is: 180,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,882.60 : 181,323.90 = 120,007.80 : x
  2. Step 2: Convert to fraction form
    120,882.60/181,323.90 = 120,007.80/x
  3. Step 3: Cross multiply
    120,882.60x = 181,323.90 × 120,007.80
  4. Step 4: Simplify right side
    120,882.60x = 21,760,282,326.42
  5. Step 5: Solve for x
    x = 21,760,282,326.42/120,882.60
  6. Step 6: Final answer
    x = 180,011.70

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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.