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Finding the Fourth Proportional to 115,751.23, 159,742.91 and 64,760.92

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Solution

The fourth proportional to 115,751.23, 159,742.91 and 64,760.92 is: 89,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,751.23 : 159,742.91 = 64,760.92 : x
  2. Step 2: Convert to fraction form
    115,751.23/159,742.91 = 64,760.92/x
  3. Step 3: Cross multiply
    115,751.23x = 159,742.91 × 64,760.92
  4. Step 4: Simplify right side
    115,751.23x = 10,345,097,815.08
  5. Step 5: Solve for x
    x = 10,345,097,815.08/115,751.23
  6. Step 6: Final answer
    x = 89,373.55

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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.