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Finding the Fourth Proportional to 136,051.30, 204,076.95 and 121,017.70

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Solution

The fourth proportional to 136,051.30, 204,076.95 and 121,017.70 is: 181,526.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,051.30 : 204,076.95 = 121,017.70 : x
  2. Step 2: Convert to fraction form
    136,051.30/204,076.95 = 121,017.70/x
  3. Step 3: Cross multiply
    136,051.30x = 204,076.95 × 121,017.70
  4. Step 4: Simplify right side
    136,051.30x = 24,696,923,112.02
  5. Step 5: Solve for x
    x = 24,696,923,112.02/136,051.30
  6. Step 6: Final answer
    x = 181,526.55

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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.