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Finding the Fourth Proportional to 115,697.36, 159,676.36 and 65,395.92

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Solution

The fourth proportional to 115,697.36, 159,676.36 and 65,395.92 is: 90,254.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,697.36 : 159,676.36 = 65,395.92 : x
  2. Step 2: Convert to fraction form
    115,697.36/159,676.36 = 65,395.92/x
  3. Step 3: Cross multiply
    115,697.36x = 159,676.36 × 65,395.92
  4. Step 4: Simplify right side
    115,697.36x = 10,442,182,464.45
  5. Step 5: Solve for x
    x = 10,442,182,464.45/115,697.36
  6. Step 6: Final answer
    x = 90,254.28

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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.