Home / 131,507.68-197,311.18-78,953.80

Finding the Fourth Proportional to 131,507.68, 197,311.18 and 78,953.80

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Solution

The fourth proportional to 131,507.68, 197,311.18 and 78,953.80 is: 118,460.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,507.68 : 197,311.18 = 78,953.80 : x
  2. Step 2: Convert to fraction form
    131,507.68/197,311.18 = 78,953.80/x
  3. Step 3: Cross multiply
    131,507.68x = 197,311.18 × 78,953.80
  4. Step 4: Simplify right side
    131,507.68x = 15,578,467,443.48
  5. Step 5: Solve for x
    x = 15,578,467,443.48/131,507.68
  6. Step 6: Final answer
    x = 118,460.51

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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.