Home / 136,981.12-188,597.84-120,834.64

Finding the Fourth Proportional to 136,981.12, 188,597.84 and 120,834.64

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Solution

The fourth proportional to 136,981.12, 188,597.84 and 120,834.64 is: 166,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,981.12 : 188,597.84 = 120,834.64 : x
  2. Step 2: Convert to fraction form
    136,981.12/188,597.84 = 120,834.64/x
  3. Step 3: Cross multiply
    136,981.12x = 188,597.84 × 120,834.64
  4. Step 4: Simplify right side
    136,981.12x = 22,789,152,101.18
  5. Step 5: Solve for x
    x = 22,789,152,101.18/136,981.12
  6. Step 6: Final answer
    x = 166,367.10

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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.