Home / 130,415.82-179,961.38-103,623.18

Finding the Fourth Proportional to 130,415.82, 179,961.38 and 103,623.18

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Solution

The fourth proportional to 130,415.82, 179,961.38 and 103,623.18 is: 142,990.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,415.82 : 179,961.38 = 103,623.18 : x
  2. Step 2: Convert to fraction form
    130,415.82/179,961.38 = 103,623.18/x
  3. Step 3: Cross multiply
    130,415.82x = 179,961.38 × 103,623.18
  4. Step 4: Simplify right side
    130,415.82x = 18,648,170,472.79
  5. Step 5: Solve for x
    x = 18,648,170,472.79/130,415.82
  6. Step 6: Final answer
    x = 142,990.09

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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.