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Finding the Fourth Proportional to 136,379.16, 188,189.76 and 75,955.42

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Solution

The fourth proportional to 136,379.16, 188,189.76 and 75,955.42 is: 104,810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,379.16 : 188,189.76 = 75,955.42 : x
  2. Step 2: Convert to fraction form
    136,379.16/188,189.76 = 75,955.42/x
  3. Step 3: Cross multiply
    136,379.16x = 188,189.76 × 75,955.42
  4. Step 4: Simplify right side
    136,379.16x = 14,294,032,139.70
  5. Step 5: Solve for x
    x = 14,294,032,139.70/136,379.16
  6. Step 6: Final answer
    x = 104,810.97

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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.