Home / 153,020.27-211,173.10-85,040.11

Finding the Fourth Proportional to 153,020.27, 211,173.10 and 85,040.11

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Solution

The fourth proportional to 153,020.27, 211,173.10 and 85,040.11 is: 117,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,020.27 : 211,173.10 = 85,040.11 : x
  2. Step 2: Convert to fraction form
    153,020.27/211,173.10 = 85,040.11/x
  3. Step 3: Cross multiply
    153,020.27x = 211,173.10 × 85,040.11
  4. Step 4: Simplify right side
    153,020.27x = 17,958,182,912.51
  5. Step 5: Solve for x
    x = 17,958,182,912.51/153,020.27
  6. Step 6: Final answer
    x = 117,358.20

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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.