Home / 126,300.16-189,349.64-72,931.54

Finding the Fourth Proportional to 126,300.16, 189,349.64 and 72,931.54

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Solution

The fourth proportional to 126,300.16, 189,349.64 and 72,931.54 is: 109,339.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,300.16 : 189,349.64 = 72,931.54 : x
  2. Step 2: Convert to fraction form
    126,300.16/189,349.64 = 72,931.54/x
  3. Step 3: Cross multiply
    126,300.16x = 189,349.64 × 72,931.54
  4. Step 4: Simplify right side
    126,300.16x = 13,809,560,843.65
  5. Step 5: Solve for x
    x = 13,809,560,843.65/126,300.16
  6. Step 6: Final answer
    x = 109,339.22

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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.