Home / 126,146.65-189,005.86-76,121.64

Finding the Fourth Proportional to 126,146.65, 189,005.86 and 76,121.64

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Solution

The fourth proportional to 126,146.65, 189,005.86 and 76,121.64 is: 114,053.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,146.65 : 189,005.86 = 76,121.64 : x
  2. Step 2: Convert to fraction form
    126,146.65/189,005.86 = 76,121.64/x
  3. Step 3: Cross multiply
    126,146.65x = 189,005.86 × 76,121.64
  4. Step 4: Simplify right side
    126,146.65x = 14,387,436,032.81
  5. Step 5: Solve for x
    x = 14,387,436,032.81/126,146.65
  6. Step 6: Final answer
    x = 114,053.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.