Home / 131,970.40-197,999.04-87,771.04

Finding the Fourth Proportional to 131,970.40, 197,999.04 and 87,771.04

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Solution

The fourth proportional to 131,970.40, 197,999.04 and 87,771.04 is: 131,685.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,970.40 : 197,999.04 = 87,771.04 : x
  2. Step 2: Convert to fraction form
    131,970.40/197,999.04 = 87,771.04/x
  3. Step 3: Cross multiply
    131,970.40x = 197,999.04 × 87,771.04
  4. Step 4: Simplify right side
    131,970.40x = 17,378,581,659.80
  5. Step 5: Solve for x
    x = 17,378,581,659.80/131,970.40
  6. Step 6: Final answer
    x = 131,685.45

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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.