Home / 136,701.81-188,644.05-74,609.91

Finding the Fourth Proportional to 136,701.81, 188,644.05 and 74,609.91

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Solution

The fourth proportional to 136,701.81, 188,644.05 and 74,609.91 is: 102,959.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,701.81 : 188,644.05 = 74,609.91 : x
  2. Step 2: Convert to fraction form
    136,701.81/188,644.05 = 74,609.91/x
  3. Step 3: Cross multiply
    136,701.81x = 188,644.05 × 74,609.91
  4. Step 4: Simplify right side
    136,701.81x = 14,074,715,592.54
  5. Step 5: Solve for x
    x = 14,074,715,592.54/136,701.81
  6. Step 6: Final answer
    x = 102,959.25

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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.