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Finding the Fourth Proportional to 115,292.90, 159,080 and 69,994.74

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Solution

The fourth proportional to 115,292.90, 159,080 and 69,994.74 is: 96,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,292.90 : 159,080 = 69,994.74 : x
  2. Step 2: Convert to fraction form
    115,292.90/159,080 = 69,994.74/x
  3. Step 3: Cross multiply
    115,292.90x = 159,080 × 69,994.74
  4. Step 4: Simplify right side
    115,292.90x = 11,134,763,239.20
  5. Step 5: Solve for x
    x = 11,134,763,239.20/115,292.90
  6. Step 6: Final answer
    x = 96,578.05

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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.