Home / 115,619.62-159,580.82-70,288

Finding the Fourth Proportional to 115,619.62, 159,580.82 and 70,288

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Solution

The fourth proportional to 115,619.62, 159,580.82 and 70,288 is: 97,013.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,619.62 : 159,580.82 = 70,288 : x
  2. Step 2: Convert to fraction form
    115,619.62/159,580.82 = 70,288/x
  3. Step 3: Cross multiply
    115,619.62x = 159,580.82 × 70,288
  4. Step 4: Simplify right side
    115,619.62x = 11,216,616,676.16
  5. Step 5: Solve for x
    x = 11,216,616,676.16/115,619.62
  6. Step 6: Final answer
    x = 97,013.09

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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.