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Finding the Fourth Proportional to 136,696.34, 205,026.50 and 40,631.51

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Solution

The fourth proportional to 136,696.34, 205,026.50 and 40,631.51 is: 60,941.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,696.34 : 205,026.50 = 40,631.51 : x
  2. Step 2: Convert to fraction form
    136,696.34/205,026.50 = 40,631.51/x
  3. Step 3: Cross multiply
    136,696.34x = 205,026.50 × 40,631.51
  4. Step 4: Simplify right side
    136,696.34x = 8,330,535,631.61
  5. Step 5: Solve for x
    x = 8,330,535,631.61/136,696.34
  6. Step 6: Final answer
    x = 60,941.91

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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.