Home / 130,708.89-180,378.36-74,120.27

Finding the Fourth Proportional to 130,708.89, 180,378.36 and 74,120.27

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Solution

The fourth proportional to 130,708.89, 180,378.36 and 74,120.27 is: 102,286.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,708.89 : 180,378.36 = 74,120.27 : x
  2. Step 2: Convert to fraction form
    130,708.89/180,378.36 = 74,120.27/x
  3. Step 3: Cross multiply
    130,708.89x = 180,378.36 × 74,120.27
  4. Step 4: Simplify right side
    130,708.89x = 13,369,691,843.47
  5. Step 5: Solve for x
    x = 13,369,691,843.47/130,708.89
  6. Step 6: Final answer
    x = 102,286.02

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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.