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Finding the Fourth Proportional to 119,172.03, 164,457.29 and 65,456.57

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Solution

The fourth proportional to 119,172.03, 164,457.29 and 65,456.57 is: 90,330.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,172.03 : 164,457.29 = 65,456.57 : x
  2. Step 2: Convert to fraction form
    119,172.03/164,457.29 = 65,456.57/x
  3. Step 3: Cross multiply
    119,172.03x = 164,457.29 × 65,456.57
  4. Step 4: Simplify right side
    119,172.03x = 10,764,810,321.49
  5. Step 5: Solve for x
    x = 10,764,810,321.49/119,172.03
  6. Step 6: Final answer
    x = 90,330.01

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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.