Home / 131,420.75-197,131.10-31,580.94

Finding the Fourth Proportional to 131,420.75, 197,131.10 and 31,580.94

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Solution

The fourth proportional to 131,420.75, 197,131.10 and 31,580.94 is: 47,371.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,420.75 : 197,131.10 = 31,580.94 : x
  2. Step 2: Convert to fraction form
    131,420.75/197,131.10 = 31,580.94/x
  3. Step 3: Cross multiply
    131,420.75x = 197,131.10 × 31,580.94
  4. Step 4: Simplify right side
    131,420.75x = 6,225,585,401.76
  5. Step 5: Solve for x
    x = 6,225,585,401.76/131,420.75
  6. Step 6: Final answer
    x = 47,371.40

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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.