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Finding the Fourth Proportional to 115,296.94, 159,109.78 and 64,995.94

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Solution

The fourth proportional to 115,296.94, 159,109.78 and 64,995.94 is: 89,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,296.94 : 159,109.78 = 64,995.94 : x
  2. Step 2: Convert to fraction form
    115,296.94/159,109.78 = 64,995.94/x
  3. Step 3: Cross multiply
    115,296.94x = 159,109.78 × 64,995.94
  4. Step 4: Simplify right side
    115,296.94x = 10,341,489,154.03
  5. Step 5: Solve for x
    x = 10,341,489,154.03/115,296.94
  6. Step 6: Final answer
    x = 89,694.40

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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.