Home / 131,980.32-182,107.85-78,245.73

Finding the Fourth Proportional to 131,980.32, 182,107.85 and 78,245.73

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Solution

The fourth proportional to 131,980.32, 182,107.85 and 78,245.73 is: 107,964.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,980.32 : 182,107.85 = 78,245.73 : x
  2. Step 2: Convert to fraction form
    131,980.32/182,107.85 = 78,245.73/x
  3. Step 3: Cross multiply
    131,980.32x = 182,107.85 × 78,245.73
  4. Step 4: Simplify right side
    131,980.32x = 14,249,161,270.75
  5. Step 5: Solve for x
    x = 14,249,161,270.75/131,980.32
  6. Step 6: Final answer
    x = 107,964.29

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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.