Home / 131,406.40-197,140.56-42,653.08

Finding the Fourth Proportional to 131,406.40, 197,140.56 and 42,653.08

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Solution

The fourth proportional to 131,406.40, 197,140.56 and 42,653.08 is: 63,989.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,406.40 : 197,140.56 = 42,653.08 : x
  2. Step 2: Convert to fraction form
    131,406.40/197,140.56 = 42,653.08/x
  3. Step 3: Cross multiply
    131,406.40x = 197,140.56 × 42,653.08
  4. Step 4: Simplify right side
    131,406.40x = 8,408,652,076.92
  5. Step 5: Solve for x
    x = 8,408,652,076.92/131,406.40
  6. Step 6: Final answer
    x = 63,989.67

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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.