Home / 131,448.60-196,719.30-78,895.80

Finding the Fourth Proportional to 131,448.60, 196,719.30 and 78,895.80

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Solution

The fourth proportional to 131,448.60, 196,719.30 and 78,895.80 is: 118,071.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,448.60 : 196,719.30 = 78,895.80 : x
  2. Step 2: Convert to fraction form
    131,448.60/196,719.30 = 78,895.80/x
  3. Step 3: Cross multiply
    131,448.60x = 196,719.30 × 78,895.80
  4. Step 4: Simplify right side
    131,448.60x = 15,520,326,548.94
  5. Step 5: Solve for x
    x = 15,520,326,548.94/131,448.60
  6. Step 6: Final answer
    x = 118,071.45

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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.