Home / 131,448.60-196,913.70-78,701.40

Finding the Fourth Proportional to 131,448.60, 196,913.70 and 78,701.40

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Solution

The fourth proportional to 131,448.60, 196,913.70 and 78,701.40 is: 117,896.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,448.60 : 196,913.70 = 78,701.40 : x
  2. Step 2: Convert to fraction form
    131,448.60/196,913.70 = 78,701.40/x
  3. Step 3: Cross multiply
    131,448.60x = 196,913.70 × 78,701.40
  4. Step 4: Simplify right side
    131,448.60x = 15,497,383,869.18
  5. Step 5: Solve for x
    x = 15,497,383,869.18/131,448.60
  6. Step 6: Final answer
    x = 117,896.91

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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.