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Finding the Fourth Proportional to 131,211.60, 196,615.80 and 97,774.80

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Solution

The fourth proportional to 131,211.60, 196,615.80 and 97,774.80 is: 146,511.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,211.60 : 196,615.80 = 97,774.80 : x
  2. Step 2: Convert to fraction form
    131,211.60/196,615.80 = 97,774.80/x
  3. Step 3: Cross multiply
    131,211.60x = 196,615.80 × 97,774.80
  4. Step 4: Simplify right side
    131,211.60x = 19,224,070,521.84
  5. Step 5: Solve for x
    x = 19,224,070,521.84/131,211.60
  6. Step 6: Final answer
    x = 146,511.97

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1.5x scale

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.