Home / 153,321.05-211,581.38-85,336.94

Finding the Fourth Proportional to 153,321.05, 211,581.38 and 85,336.94

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Solution

The fourth proportional to 153,321.05, 211,581.38 and 85,336.94 is: 117,764.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,321.05 : 211,581.38 = 85,336.94 : x
  2. Step 2: Convert to fraction form
    153,321.05/211,581.38 = 85,336.94/x
  3. Step 3: Cross multiply
    153,321.05x = 211,581.38 × 85,336.94
  4. Step 4: Simplify right side
    153,321.05x = 18,055,708,272.47
  5. Step 5: Solve for x
    x = 18,055,708,272.47/153,321.05
  6. Step 6: Final answer
    x = 117,764.05

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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.