Home / 136,835.96-188,964.03-129,381.12

Finding the Fourth Proportional to 136,835.96, 188,964.03 and 129,381.12

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Solution

The fourth proportional to 136,835.96, 188,964.03 and 129,381.12 is: 178,669.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,835.96 : 188,964.03 = 129,381.12 : x
  2. Step 2: Convert to fraction form
    136,835.96/188,964.03 = 129,381.12/x
  3. Step 3: Cross multiply
    136,835.96x = 188,964.03 × 129,381.12
  4. Step 4: Simplify right side
    136,835.96x = 24,448,377,841.11
  5. Step 5: Solve for x
    x = 24,448,377,841.11/136,835.96
  6. Step 6: Final answer
    x = 178,669.25

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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.