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Finding the Fourth Proportional to 115,364.56, 159,201.48 and 65,079.76

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Solution

The fourth proportional to 115,364.56, 159,201.48 and 65,079.76 is: 89,809.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,364.56 : 159,201.48 = 65,079.76 : x
  2. Step 2: Convert to fraction form
    115,364.56/159,201.48 = 65,079.76/x
  3. Step 3: Cross multiply
    115,364.56x = 159,201.48 × 65,079.76
  4. Step 4: Simplify right side
    115,364.56x = 10,360,794,110.04
  5. Step 5: Solve for x
    x = 10,360,794,110.04/115,364.56
  6. Step 6: Final answer
    x = 89,809.16

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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.