Home / 123,899.17-170,981.54-76,183.69

Finding the Fourth Proportional to 123,899.17, 170,981.54 and 76,183.69

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Solution

The fourth proportional to 123,899.17, 170,981.54 and 76,183.69 is: 105,133.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,899.17 : 170,981.54 = 76,183.69 : x
  2. Step 2: Convert to fraction form
    123,899.17/170,981.54 = 76,183.69/x
  3. Step 3: Cross multiply
    123,899.17x = 170,981.54 × 76,183.69
  4. Step 4: Simplify right side
    123,899.17x = 13,026,004,639.08
  5. Step 5: Solve for x
    x = 13,026,004,639.08/123,899.17
  6. Step 6: Final answer
    x = 105,133.91

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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.