Home / 131,237.40-196,844.04-78,608.28

Finding the Fourth Proportional to 131,237.40, 196,844.04 and 78,608.28

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Solution

The fourth proportional to 131,237.40, 196,844.04 and 78,608.28 is: 117,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,237.40 : 196,844.04 = 78,608.28 : x
  2. Step 2: Convert to fraction form
    131,237.40/196,844.04 = 78,608.28/x
  3. Step 3: Cross multiply
    131,237.40x = 196,844.04 × 78,608.28
  4. Step 4: Simplify right side
    131,237.40x = 15,473,571,412.65
  5. Step 5: Solve for x
    x = 15,473,571,412.65/131,237.40
  6. Step 6: Final answer
    x = 117,905.20

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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.