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Finding the Fourth Proportional to 112,703.51, 168,786.89 and 65,218.52

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Solution

The fourth proportional to 112,703.51, 168,786.89 and 65,218.52 is: 97,672.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,703.51 : 168,786.89 = 65,218.52 : x
  2. Step 2: Convert to fraction form
    112,703.51/168,786.89 = 65,218.52/x
  3. Step 3: Cross multiply
    112,703.51x = 168,786.89 × 65,218.52
  4. Step 4: Simplify right side
    112,703.51x = 11,008,031,161.20
  5. Step 5: Solve for x
    x = 11,008,031,161.20/112,703.51
  6. Step 6: Final answer
    x = 97,672.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.