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Finding the Fourth Proportional to 116,817.76, 161,279.94 and 76,020.76

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Solution

The fourth proportional to 116,817.76, 161,279.94 and 76,020.76 is: 104,955.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,817.76 : 161,279.94 = 76,020.76 : x
  2. Step 2: Convert to fraction form
    116,817.76/161,279.94 = 76,020.76/x
  3. Step 3: Cross multiply
    116,817.76x = 161,279.94 × 76,020.76
  4. Step 4: Simplify right side
    116,817.76x = 12,260,623,611.55
  5. Step 5: Solve for x
    x = 12,260,623,611.55/116,817.76
  6. Step 6: Final answer
    x = 104,955.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.