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Finding the Fourth Proportional to 136,303.97, 188,105.01 and 75,870.79

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Solution

The fourth proportional to 136,303.97, 188,105.01 and 75,870.79 is: 104,704.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,303.97 : 188,105.01 = 75,870.79 : x
  2. Step 2: Convert to fraction form
    136,303.97/188,105.01 = 75,870.79/x
  3. Step 3: Cross multiply
    136,303.97x = 188,105.01 × 75,870.79
  4. Step 4: Simplify right side
    136,303.97x = 14,271,674,771.13
  5. Step 5: Solve for x
    x = 14,271,674,771.13/136,303.97
  6. Step 6: Final answer
    x = 104,704.76

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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.