Home / 115,340.57-159,270.10-72,394.49

Finding the Fourth Proportional to 115,340.57, 159,270.10 and 72,394.49

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Solution

The fourth proportional to 115,340.57, 159,270.10 and 72,394.49 is: 99,967.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,340.57 : 159,270.10 = 72,394.49 : x
  2. Step 2: Convert to fraction form
    115,340.57/159,270.10 = 72,394.49/x
  3. Step 3: Cross multiply
    115,340.57x = 159,270.10 × 72,394.49
  4. Step 4: Simplify right side
    115,340.57x = 11,530,276,865.40
  5. Step 5: Solve for x
    x = 11,530,276,865.40/115,340.57
  6. Step 6: Final answer
    x = 99,967.23

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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.