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Finding the Fourth Proportional to 136,801.60, 205,029.60 and 66,529.60

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Solution

The fourth proportional to 136,801.60, 205,029.60 and 66,529.60 is: 99,710.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,801.60 : 205,029.60 = 66,529.60 : x
  2. Step 2: Convert to fraction form
    136,801.60/205,029.60 = 66,529.60/x
  3. Step 3: Cross multiply
    136,801.60x = 205,029.60 × 66,529.60
  4. Step 4: Simplify right side
    136,801.60x = 13,640,537,276.16
  5. Step 5: Solve for x
    x = 13,640,537,276.16/136,801.60
  6. Step 6: Final answer
    x = 99,710.36

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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.