Home / 153,005.22-211,140.30-85,021.86

Finding the Fourth Proportional to 153,005.22, 211,140.30 and 85,021.86

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Solution

The fourth proportional to 153,005.22, 211,140.30 and 85,021.86 is: 117,326.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,005.22 : 211,140.30 = 85,021.86 : x
  2. Step 2: Convert to fraction form
    153,005.22/211,140.30 = 85,021.86/x
  3. Step 3: Cross multiply
    153,005.22x = 211,140.30 × 85,021.86
  4. Step 4: Simplify right side
    153,005.22x = 17,951,541,026.96
  5. Step 5: Solve for x
    x = 17,951,541,026.96/153,005.22
  6. Step 6: Final answer
    x = 117,326.33

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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.