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Finding the Fourth Proportional to 115,043.72, 158,782.35 and 69,746.39

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Solution

The fourth proportional to 115,043.72, 158,782.35 and 69,746.39 is: 96,263.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,043.72 : 158,782.35 = 69,746.39 : x
  2. Step 2: Convert to fraction form
    115,043.72/158,782.35 = 69,746.39/x
  3. Step 3: Cross multiply
    115,043.72x = 158,782.35 × 69,746.39
  4. Step 4: Simplify right side
    115,043.72x = 11,074,496,021.70
  5. Step 5: Solve for x
    x = 11,074,496,021.70/115,043.72
  6. Step 6: Final answer
    x = 96,263.37

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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.