Home / 153,103.12-211,299.78-85,126.84

Finding the Fourth Proportional to 153,103.12, 211,299.78 and 85,126.84

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Solution

The fourth proportional to 153,103.12, 211,299.78 and 85,126.84 is: 117,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,103.12 : 211,299.78 = 85,126.84 : x
  2. Step 2: Convert to fraction form
    153,103.12/211,299.78 = 85,126.84/x
  3. Step 3: Cross multiply
    153,103.12x = 211,299.78 × 85,126.84
  4. Step 4: Simplify right side
    153,103.12x = 17,987,282,564.10
  5. Step 5: Solve for x
    x = 17,987,282,564.10/153,103.12
  6. Step 6: Final answer
    x = 117,484.76

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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.