Home / 189,416.09-261,400.29-107,742.24

Finding the Fourth Proportional to 189,416.09, 261,400.29 and 107,742.24

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Solution

The fourth proportional to 189,416.09, 261,400.29 and 107,742.24 is: 148,687.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,416.09 : 261,400.29 = 107,742.24 : x
  2. Step 2: Convert to fraction form
    189,416.09/261,400.29 = 107,742.24/x
  3. Step 3: Cross multiply
    189,416.09x = 261,400.29 × 107,742.24
  4. Step 4: Simplify right side
    189,416.09x = 28,163,852,918.70
  5. Step 5: Solve for x
    x = 28,163,852,918.70/189,416.09
  6. Step 6: Final answer
    x = 148,687.76

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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.