Home / 136,584.42-188,485.80-79,235.34

Finding the Fourth Proportional to 136,584.42, 188,485.80 and 79,235.34

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Solution

The fourth proportional to 136,584.42, 188,485.80 and 79,235.34 is: 109,344.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,584.42 : 188,485.80 = 79,235.34 : x
  2. Step 2: Convert to fraction form
    136,584.42/188,485.80 = 79,235.34/x
  3. Step 3: Cross multiply
    136,584.42x = 188,485.80 × 79,235.34
  4. Step 4: Simplify right side
    136,584.42x = 14,934,736,448.17
  5. Step 5: Solve for x
    x = 14,934,736,448.17/136,584.42
  6. Step 6: Final answer
    x = 109,344.36

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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.