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Finding the Fourth Proportional to 115,574.77, 159,433.41 and 73,157.91

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Solution

The fourth proportional to 115,574.77, 159,433.41 and 73,157.91 is: 100,920.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,574.77 : 159,433.41 = 73,157.91 : x
  2. Step 2: Convert to fraction form
    115,574.77/159,433.41 = 73,157.91/x
  3. Step 3: Cross multiply
    115,574.77x = 159,433.41 × 73,157.91
  4. Step 4: Simplify right side
    115,574.77x = 11,663,815,059.77
  5. Step 5: Solve for x
    x = 11,663,815,059.77/115,574.77
  6. Step 6: Final answer
    x = 100,920.08

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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.