Home / 136,787.37-188,776.08-76,369.89

Finding the Fourth Proportional to 136,787.37, 188,776.08 and 76,369.89

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Solution

The fourth proportional to 136,787.37, 188,776.08 and 76,369.89 is: 105,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,787.37 : 188,776.08 = 76,369.89 : x
  2. Step 2: Convert to fraction form
    136,787.37/188,776.08 = 76,369.89/x
  3. Step 3: Cross multiply
    136,787.37x = 188,776.08 × 76,369.89
  4. Step 4: Simplify right side
    136,787.37x = 14,416,808,464.23
  5. Step 5: Solve for x
    x = 14,416,808,464.23/136,787.37
  6. Step 6: Final answer
    x = 105,395.76

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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.