Home / 136,332.73-188,090.46-78,940.72

Finding the Fourth Proportional to 136,332.73, 188,090.46 and 78,940.72

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Solution

The fourth proportional to 136,332.73, 188,090.46 and 78,940.72 is: 108,909.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,332.73 : 188,090.46 = 78,940.72 : x
  2. Step 2: Convert to fraction form
    136,332.73/188,090.46 = 78,940.72/x
  3. Step 3: Cross multiply
    136,332.73x = 188,090.46 × 78,940.72
  4. Step 4: Simplify right side
    136,332.73x = 14,847,996,534.88
  5. Step 5: Solve for x
    x = 14,847,996,534.88/136,332.73
  6. Step 6: Final answer
    x = 108,909.99

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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.