Home / 131,472.20-197,208.30-90,000.20

Finding the Fourth Proportional to 131,472.20, 197,208.30 and 90,000.20

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Solution

The fourth proportional to 131,472.20, 197,208.30 and 90,000.20 is: 135,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,472.20 : 197,208.30 = 90,000.20 : x
  2. Step 2: Convert to fraction form
    131,472.20/197,208.30 = 90,000.20/x
  3. Step 3: Cross multiply
    131,472.20x = 197,208.30 × 90,000.20
  4. Step 4: Simplify right side
    131,472.20x = 17,748,786,441.66
  5. Step 5: Solve for x
    x = 17,748,786,441.66/131,472.20
  6. Step 6: Final answer
    x = 135,000.30

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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.