Home / 131,416.80-197,125.20-100,312.80

Finding the Fourth Proportional to 131,416.80, 197,125.20 and 100,312.80

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Solution

The fourth proportional to 131,416.80, 197,125.20 and 100,312.80 is: 150,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,416.80 : 197,125.20 = 100,312.80 : x
  2. Step 2: Convert to fraction form
    131,416.80/197,125.20 = 100,312.80/x
  3. Step 3: Cross multiply
    131,416.80x = 197,125.20 × 100,312.80
  4. Step 4: Simplify right side
    131,416.80x = 19,774,180,762.56
  5. Step 5: Solve for x
    x = 19,774,180,762.56/131,416.80
  6. Step 6: Final answer
    x = 150,469.20

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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.