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Finding the Fourth Proportional to 115,609.68, 159,538.01 and 64,622.51

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Solution

The fourth proportional to 115,609.68, 159,538.01 and 64,622.51 is: 89,177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,609.68 : 159,538.01 = 64,622.51 : x
  2. Step 2: Convert to fraction form
    115,609.68/159,538.01 = 64,622.51/x
  3. Step 3: Cross multiply
    115,609.68x = 159,538.01 × 64,622.51
  4. Step 4: Simplify right side
    115,609.68x = 10,309,746,124.07
  5. Step 5: Solve for x
    x = 10,309,746,124.07/115,609.68
  6. Step 6: Final answer
    x = 89,177.19

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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.