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Finding the Fourth Proportional to 134,220.80, 200,812.80 and 87,564.80

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Solution

The fourth proportional to 134,220.80, 200,812.80 and 87,564.80 is: 131,009.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,220.80 : 200,812.80 = 87,564.80 : x
  2. Step 2: Convert to fraction form
    134,220.80/200,812.80 = 87,564.80/x
  3. Step 3: Cross multiply
    134,220.80x = 200,812.80 × 87,564.80
  4. Step 4: Simplify right side
    134,220.80x = 17,584,132,669.44
  5. Step 5: Solve for x
    x = 17,584,132,669.44/134,220.80
  6. Step 6: Final answer
    x = 131,009.00

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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.