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Finding the Fourth Proportional to 136,415.66, 188,246.12 and 75,159.83

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Solution

The fourth proportional to 136,415.66, 188,246.12 and 75,159.83 is: 103,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,415.66 : 188,246.12 = 75,159.83 : x
  2. Step 2: Convert to fraction form
    136,415.66/188,246.12 = 75,159.83/x
  3. Step 3: Cross multiply
    136,415.66x = 188,246.12 × 75,159.83
  4. Step 4: Simplify right side
    136,415.66x = 14,148,545,060.33
  5. Step 5: Solve for x
    x = 14,148,545,060.33/136,415.66
  6. Step 6: Final answer
    x = 103,716.43

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1.5x scale

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.