Home / 131,020.36-180,752.07-85,619.54

Finding the Fourth Proportional to 131,020.36, 180,752.07 and 85,619.54

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Solution

The fourth proportional to 131,020.36, 180,752.07 and 85,619.54 is: 118,118.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,020.36 : 180,752.07 = 85,619.54 : x
  2. Step 2: Convert to fraction form
    131,020.36/180,752.07 = 85,619.54/x
  3. Step 3: Cross multiply
    131,020.36x = 180,752.07 × 85,619.54
  4. Step 4: Simplify right side
    131,020.36x = 15,475,909,087.45
  5. Step 5: Solve for x
    x = 15,475,909,087.45/131,020.36
  6. Step 6: Final answer
    x = 118,118.35

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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.