Home / 138,811.42-191,561.10-75,150.58

Finding the Fourth Proportional to 138,811.42, 191,561.10 and 75,150.58

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Solution

The fourth proportional to 138,811.42, 191,561.10 and 75,150.58 is: 103,708.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,811.42 : 191,561.10 = 75,150.58 : x
  2. Step 2: Convert to fraction form
    138,811.42/191,561.10 = 75,150.58/x
  3. Step 3: Cross multiply
    138,811.42x = 191,561.10 × 75,150.58
  4. Step 4: Simplify right side
    138,811.42x = 14,395,927,770.44
  5. Step 5: Solve for x
    x = 14,395,927,770.44/138,811.42
  6. Step 6: Final answer
    x = 103,708.53

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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.