Home / 189,742.08-261,966.24-121,788.48

Finding the Fourth Proportional to 189,742.08, 261,966.24 and 121,788.48

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Solution

The fourth proportional to 189,742.08, 261,966.24 and 121,788.48 is: 168,146.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,742.08 : 261,966.24 = 121,788.48 : x
  2. Step 2: Convert to fraction form
    189,742.08/261,966.24 = 121,788.48/x
  3. Step 3: Cross multiply
    189,742.08x = 261,966.24 × 121,788.48
  4. Step 4: Simplify right side
    189,742.08x = 31,904,470,180.92
  5. Step 5: Solve for x
    x = 31,904,470,180.92/189,742.08
  6. Step 6: Final answer
    x = 168,146.52

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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.