Home / 131,423.80-197,135.70-91,334.20

Finding the Fourth Proportional to 131,423.80, 197,135.70 and 91,334.20

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Solution

The fourth proportional to 131,423.80, 197,135.70 and 91,334.20 is: 137,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,423.80 : 197,135.70 = 91,334.20 : x
  2. Step 2: Convert to fraction form
    131,423.80/197,135.70 = 91,334.20/x
  3. Step 3: Cross multiply
    131,423.80x = 197,135.70 × 91,334.20
  4. Step 4: Simplify right side
    131,423.80x = 18,005,231,450.94
  5. Step 5: Solve for x
    x = 18,005,231,450.94/131,423.80
  6. Step 6: Final answer
    x = 137,001.30

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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.