Home / 131,406.37-197,106.78-42,659.75

Finding the Fourth Proportional to 131,406.37, 197,106.78 and 42,659.75

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Solution

The fourth proportional to 131,406.37, 197,106.78 and 42,659.75 is: 63,988.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,406.37 : 197,106.78 = 42,659.75 : x
  2. Step 2: Convert to fraction form
    131,406.37/197,106.78 = 42,659.75/x
  3. Step 3: Cross multiply
    131,406.37x = 197,106.78 × 42,659.75
  4. Step 4: Simplify right side
    131,406.37x = 8,408,525,958.11
  5. Step 5: Solve for x
    x = 8,408,525,958.11/131,406.37
  6. Step 6: Final answer
    x = 63,988.72

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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.