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Finding the Fourth Proportional to 136,051.76, 204,079.71 and 51,816.57

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Solution

The fourth proportional to 136,051.76, 204,079.71 and 51,816.57 is: 77,725.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,051.76 : 204,079.71 = 51,816.57 : x
  2. Step 2: Convert to fraction form
    136,051.76/204,079.71 = 51,816.57/x
  3. Step 3: Cross multiply
    136,051.76x = 204,079.71 × 51,816.57
  4. Step 4: Simplify right side
    136,051.76x = 10,574,710,578.79
  5. Step 5: Solve for x
    x = 10,574,710,578.79/136,051.76
  6. Step 6: Final answer
    x = 77,725.65

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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.