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Finding the Fourth Proportional to 115,909.36, 159,944.16 and 65,608.36

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Solution

The fourth proportional to 115,909.36, 159,944.16 and 65,608.36 is: 90,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,909.36 : 159,944.16 = 65,608.36 : x
  2. Step 2: Convert to fraction form
    115,909.36/159,944.16 = 65,608.36/x
  3. Step 3: Cross multiply
    115,909.36x = 159,944.16 × 65,608.36
  4. Step 4: Simplify right side
    115,909.36x = 10,493,674,029.18
  5. Step 5: Solve for x
    x = 10,493,674,029.18/115,909.36
  6. Step 6: Final answer
    x = 90,533.45

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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.