Home / 107,765.12-148,783.94-79,421.44

Finding the Fourth Proportional to 107,765.12, 148,783.94 and 79,421.44

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Solution

The fourth proportional to 107,765.12, 148,783.94 and 79,421.44 is: 109,651.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,765.12 : 148,783.94 = 79,421.44 : x
  2. Step 2: Convert to fraction form
    107,765.12/148,783.94 = 79,421.44/x
  3. Step 3: Cross multiply
    107,765.12x = 148,783.94 × 79,421.44
  4. Step 4: Simplify right side
    107,765.12x = 11,816,634,763.67
  5. Step 5: Solve for x
    x = 11,816,634,763.67/107,765.12
  6. Step 6: Final answer
    x = 109,651.76

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1.5x scale

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.