Home / 115,735.08-159,668.78-72,689.25

Finding the Fourth Proportional to 115,735.08, 159,668.78 and 72,689.25

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Solution

The fourth proportional to 115,735.08, 159,668.78 and 72,689.25 is: 100,282.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,735.08 : 159,668.78 = 72,689.25 : x
  2. Step 2: Convert to fraction form
    115,735.08/159,668.78 = 72,689.25/x
  3. Step 3: Cross multiply
    115,735.08x = 159,668.78 × 72,689.25
  4. Step 4: Simplify right side
    115,735.08x = 11,606,203,503.17
  5. Step 5: Solve for x
    x = 11,606,203,503.17/115,735.08
  6. Step 6: Final answer
    x = 100,282.50

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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.