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Finding the Fourth Proportional to 119,020, 164,247.60 and 66,028

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Solution

The fourth proportional to 119,020, 164,247.60 and 66,028 is: 91,118.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,020 : 164,247.60 = 66,028 : x
  2. Step 2: Convert to fraction form
    119,020/164,247.60 = 66,028/x
  3. Step 3: Cross multiply
    119,020x = 164,247.60 × 66,028
  4. Step 4: Simplify right side
    119,020x = 10,844,940,532.80
  5. Step 5: Solve for x
    x = 10,844,940,532.80/119,020
  6. Step 6: Final answer
    x = 91,118.64

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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.