Home / 123,574.20-185,102.10-68,105.40

Finding the Fourth Proportional to 123,574.20, 185,102.10 and 68,105.40

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Solution

The fourth proportional to 123,574.20, 185,102.10 and 68,105.40 is: 102,015.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,574.20 : 185,102.10 = 68,105.40 : x
  2. Step 2: Convert to fraction form
    123,574.20/185,102.10 = 68,105.40/x
  3. Step 3: Cross multiply
    123,574.20x = 185,102.10 × 68,105.40
  4. Step 4: Simplify right side
    123,574.20x = 12,606,452,561.34
  5. Step 5: Solve for x
    x = 12,606,452,561.34/123,574.20
  6. Step 6: Final answer
    x = 102,015.25

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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.