Home / 188,387.10-259,900.65-107,771.58

Finding the Fourth Proportional to 188,387.10, 259,900.65 and 107,771.58

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Solution

The fourth proportional to 188,387.10, 259,900.65 and 107,771.58 is: 148,682.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,387.10 : 259,900.65 = 107,771.58 : x
  2. Step 2: Convert to fraction form
    188,387.10/259,900.65 = 107,771.58/x
  3. Step 3: Cross multiply
    188,387.10x = 259,900.65 × 107,771.58
  4. Step 4: Simplify right side
    188,387.10x = 28,009,903,693.53
  5. Step 5: Solve for x
    x = 28,009,903,693.53/188,387.10
  6. Step 6: Final answer
    x = 148,682.71

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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.