Home / 123,518.11-170,389.24-75,134.83

Finding the Fourth Proportional to 123,518.11, 170,389.24 and 75,134.83

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Solution

The fourth proportional to 123,518.11, 170,389.24 and 75,134.83 is: 103,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,518.11 : 170,389.24 = 75,134.83 : x
  2. Step 2: Convert to fraction form
    123,518.11/170,389.24 = 75,134.83/x
  3. Step 3: Cross multiply
    123,518.11x = 170,389.24 × 75,134.83
  4. Step 4: Simplify right side
    123,518.11x = 12,802,166,581.23
  5. Step 5: Solve for x
    x = 12,802,166,581.23/123,518.11
  6. Step 6: Final answer
    x = 103,646.07

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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.