Home / 121,259.32-180,940.64-108,650.91

Finding the Fourth Proportional to 121,259.32, 180,940.64 and 108,650.91

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Solution

The fourth proportional to 121,259.32, 180,940.64 and 108,650.91 is: 162,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,259.32 : 180,940.64 = 108,650.91 : x
  2. Step 2: Convert to fraction form
    121,259.32/180,940.64 = 108,650.91/x
  3. Step 3: Cross multiply
    121,259.32x = 180,940.64 × 108,650.91
  4. Step 4: Simplify right side
    121,259.32x = 19,659,364,015.65
  5. Step 5: Solve for x
    x = 19,659,364,015.65/121,259.32
  6. Step 6: Final answer
    x = 162,126.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.