Home / 153,015.28-211,147.64-85,027.95

Finding the Fourth Proportional to 153,015.28, 211,147.64 and 85,027.95

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Solution

The fourth proportional to 153,015.28, 211,147.64 and 85,027.95 is: 117,331.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,015.28 : 211,147.64 = 85,027.95 : x
  2. Step 2: Convert to fraction form
    153,015.28/211,147.64 = 85,027.95/x
  3. Step 3: Cross multiply
    153,015.28x = 211,147.64 × 85,027.95
  4. Step 4: Simplify right side
    153,015.28x = 17,953,449,920.80
  5. Step 5: Solve for x
    x = 17,953,449,920.80/153,015.28
  6. Step 6: Final answer
    x = 117,331.09

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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.