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Finding the Fourth Proportional to 119,281.28, 164,608.54 and 65,571.80

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Solution

The fourth proportional to 119,281.28, 164,608.54 and 65,571.80 is: 90,489.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,281.28 : 164,608.54 = 65,571.80 : x
  2. Step 2: Convert to fraction form
    119,281.28/164,608.54 = 65,571.80/x
  3. Step 3: Cross multiply
    119,281.28x = 164,608.54 × 65,571.80
  4. Step 4: Simplify right side
    119,281.28x = 10,793,678,510.76
  5. Step 5: Solve for x
    x = 10,793,678,510.76/119,281.28
  6. Step 6: Final answer
    x = 90,489.29

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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.