Home / 130,645.32-180,305.64-74,067

Finding the Fourth Proportional to 130,645.32, 180,305.64 and 74,067

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Solution

The fourth proportional to 130,645.32, 180,305.64 and 74,067 is: 102,221.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,645.32 : 180,305.64 = 74,067 : x
  2. Step 2: Convert to fraction form
    130,645.32/180,305.64 = 74,067/x
  3. Step 3: Cross multiply
    130,645.32x = 180,305.64 × 74,067
  4. Step 4: Simplify right side
    130,645.32x = 13,354,697,837.88
  5. Step 5: Solve for x
    x = 13,354,697,837.88/130,645.32
  6. Step 6: Final answer
    x = 102,221.02

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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.