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Finding the Fourth Proportional to 115,937.08, 159,992.94 and 65,640.76

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Solution

The fourth proportional to 115,937.08, 159,992.94 and 65,640.76 is: 90,584.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,937.08 : 159,992.94 = 65,640.76 : x
  2. Step 2: Convert to fraction form
    115,937.08/159,992.94 = 65,640.76/x
  3. Step 3: Cross multiply
    115,937.08x = 159,992.94 × 65,640.76
  4. Step 4: Simplify right side
    115,937.08x = 10,502,058,176.23
  5. Step 5: Solve for x
    x = 10,502,058,176.23/115,937.08
  6. Step 6: Final answer
    x = 90,584.12

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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.