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Finding the Fourth Proportional to 136,407.86, 188,329.01 and 100,535.39

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Solution

The fourth proportional to 136,407.86, 188,329.01 and 100,535.39 is: 138,802.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,407.86 : 188,329.01 = 100,535.39 : x
  2. Step 2: Convert to fraction form
    136,407.86/188,329.01 = 100,535.39/x
  3. Step 3: Cross multiply
    136,407.86x = 188,329.01 × 100,535.39
  4. Step 4: Simplify right side
    136,407.86x = 18,933,729,024.34
  5. Step 5: Solve for x
    x = 18,933,729,024.34/136,407.86
  6. Step 6: Final answer
    x = 138,802.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.