Home / 123,401.76-170,296.08-74,989.92

Finding the Fourth Proportional to 123,401.76, 170,296.08 and 74,989.92

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Solution

The fourth proportional to 123,401.76, 170,296.08 and 74,989.92 is: 103,487.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,401.76 : 170,296.08 = 74,989.92 : x
  2. Step 2: Convert to fraction form
    123,401.76/170,296.08 = 74,989.92/x
  3. Step 3: Cross multiply
    123,401.76x = 170,296.08 × 74,989.92
  4. Step 4: Simplify right side
    123,401.76x = 12,770,489,415.51
  5. Step 5: Solve for x
    x = 12,770,489,415.51/123,401.76
  6. Step 6: Final answer
    x = 103,487.09

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1.5x scale

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.