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Finding the Fourth Proportional to 134,973.20, 202,546.20 and 78,813.20

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Solution

The fourth proportional to 134,973.20, 202,546.20 and 78,813.20 is: 118,270.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,973.20 : 202,546.20 = 78,813.20 : x
  2. Step 2: Convert to fraction form
    134,973.20/202,546.20 = 78,813.20/x
  3. Step 3: Cross multiply
    134,973.20x = 202,546.20 × 78,813.20
  4. Step 4: Simplify right side
    134,973.20x = 15,963,314,169.84
  5. Step 5: Solve for x
    x = 15,963,314,169.84/134,973.20
  6. Step 6: Final answer
    x = 118,270.25

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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.