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Finding the Fourth Proportional to 136,476.34, 188,334.80 and 76,045.70

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Solution

The fourth proportional to 136,476.34, 188,334.80 and 76,045.70 is: 104,941.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,476.34 : 188,334.80 = 76,045.70 : x
  2. Step 2: Convert to fraction form
    136,476.34/188,334.80 = 76,045.70/x
  3. Step 3: Cross multiply
    136,476.34x = 188,334.80 × 76,045.70
  4. Step 4: Simplify right side
    136,476.34x = 14,322,051,700.36
  5. Step 5: Solve for x
    x = 14,322,051,700.36/136,476.34
  6. Step 6: Final answer
    x = 104,941.65

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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.