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Finding the Fourth Proportional to 136,462.32, 188,396.15 and 91,216.94

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Solution

The fourth proportional to 136,462.32, 188,396.15 and 91,216.94 is: 125,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,462.32 : 188,396.15 = 91,216.94 : x
  2. Step 2: Convert to fraction form
    136,462.32/188,396.15 = 91,216.94/x
  3. Step 3: Cross multiply
    136,462.32x = 188,396.15 × 91,216.94
  4. Step 4: Simplify right side
    136,462.32x = 17,184,918,912.72
  5. Step 5: Solve for x
    x = 17,184,918,912.72/136,462.32
  6. Step 6: Final answer
    x = 125,931.60

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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.