Home / 136,535.07-188,499.21-121,385.88

Finding the Fourth Proportional to 136,535.07, 188,499.21 and 121,385.88

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Solution

The fourth proportional to 136,535.07, 188,499.21 and 121,385.88 is: 167,584.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,535.07 : 188,499.21 = 121,385.88 : x
  2. Step 2: Convert to fraction form
    136,535.07/188,499.21 = 121,385.88/x
  3. Step 3: Cross multiply
    136,535.07x = 188,499.21 × 121,385.88
  4. Step 4: Simplify right side
    136,535.07x = 22,881,142,485.15
  5. Step 5: Solve for x
    x = 22,881,142,485.15/136,535.07
  6. Step 6: Final answer
    x = 167,584.36

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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.