Home / 97,213.20-145,596.21-81,131.46

Finding the Fourth Proportional to 97,213.20, 145,596.21 and 81,131.46

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Solution

The fourth proportional to 97,213.20, 145,596.21 and 81,131.46 is: 121,510.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,213.20 : 145,596.21 = 81,131.46 : x
  2. Step 2: Convert to fraction form
    97,213.20/145,596.21 = 81,131.46/x
  3. Step 3: Cross multiply
    97,213.20x = 145,596.21 × 81,131.46
  4. Step 4: Simplify right side
    97,213.20x = 11,812,433,087.77
  5. Step 5: Solve for x
    x = 11,812,433,087.77/97,213.20
  6. Step 6: Final answer
    x = 121,510.59

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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.