Home / 123,564.37-170,537.05-78,246.49

Finding the Fourth Proportional to 123,564.37, 170,537.05 and 78,246.49

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Solution

The fourth proportional to 123,564.37, 170,537.05 and 78,246.49 is: 107,991.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,564.37 : 170,537.05 = 78,246.49 : x
  2. Step 2: Convert to fraction form
    123,564.37/170,537.05 = 78,246.49/x
  3. Step 3: Cross multiply
    123,564.37x = 170,537.05 × 78,246.49
  4. Step 4: Simplify right side
    123,564.37x = 13,343,925,577.45
  5. Step 5: Solve for x
    x = 13,343,925,577.45/123,564.37
  6. Step 6: Final answer
    x = 107,991.69

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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.