Home / 189,335.68-261,236.64-115,729.52

Finding the Fourth Proportional to 189,335.68, 261,236.64 and 115,729.52

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Solution

The fourth proportional to 189,335.68, 261,236.64 and 115,729.52 is: 159,678.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,335.68 : 261,236.64 = 115,729.52 : x
  2. Step 2: Convert to fraction form
    189,335.68/261,236.64 = 115,729.52/x
  3. Step 3: Cross multiply
    189,335.68x = 261,236.64 × 115,729.52
  4. Step 4: Simplify right side
    189,335.68x = 30,232,790,953.61
  5. Step 5: Solve for x
    x = 30,232,790,953.61/189,335.68
  6. Step 6: Final answer
    x = 159,678.25

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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.