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Finding the Fourth Proportional to 136,719.60, 205,079.40 and 125,893.95

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Solution

The fourth proportional to 136,719.60, 205,079.40 and 125,893.95 is: 188,840.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,719.60 : 205,079.40 = 125,893.95 : x
  2. Step 2: Convert to fraction form
    136,719.60/205,079.40 = 125,893.95/x
  3. Step 3: Cross multiply
    136,719.60x = 205,079.40 × 125,893.95
  4. Step 4: Simplify right side
    136,719.60x = 25,818,255,729.63
  5. Step 5: Solve for x
    x = 25,818,255,729.63/136,719.60
  6. Step 6: Final answer
    x = 188,840.93

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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.