Home / 123,536.75-170,498.93-78,218.87

Finding the Fourth Proportional to 123,536.75, 170,498.93 and 78,218.87

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Solution

The fourth proportional to 123,536.75, 170,498.93 and 78,218.87 is: 107,953.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,536.75 : 170,498.93 = 78,218.87 : x
  2. Step 2: Convert to fraction form
    123,536.75/170,498.93 = 78,218.87/x
  3. Step 3: Cross multiply
    123,536.75x = 170,498.93 × 78,218.87
  4. Step 4: Simplify right side
    123,536.75x = 13,336,232,397.22
  5. Step 5: Solve for x
    x = 13,336,232,397.22/123,536.75
  6. Step 6: Final answer
    x = 107,953.57

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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.