Home / 130,480.94-180,150.44-100,212.17

Finding the Fourth Proportional to 130,480.94, 180,150.44 and 100,212.17

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Solution

The fourth proportional to 130,480.94, 180,150.44 and 100,212.17 is: 138,359.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,480.94 : 180,150.44 = 100,212.17 : x
  2. Step 2: Convert to fraction form
    130,480.94/180,150.44 = 100,212.17/x
  3. Step 3: Cross multiply
    130,480.94x = 180,150.44 × 100,212.17
  4. Step 4: Simplify right side
    130,480.94x = 18,053,266,017.79
  5. Step 5: Solve for x
    x = 18,053,266,017.79/130,480.94
  6. Step 6: Final answer
    x = 138,359.42

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1.5x scale

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.