Home / 105,634.91-158,345.74-66,219.70

Finding the Fourth Proportional to 105,634.91, 158,345.74 and 66,219.70

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Solution

The fourth proportional to 105,634.91, 158,345.74 and 66,219.70 is: 99,262.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,634.91 : 158,345.74 = 66,219.70 : x
  2. Step 2: Convert to fraction form
    105,634.91/158,345.74 = 66,219.70/x
  3. Step 3: Cross multiply
    105,634.91x = 158,345.74 × 66,219.70
  4. Step 4: Simplify right side
    105,634.91x = 10,485,607,085.99
  5. Step 5: Solve for x
    x = 10,485,607,085.99/105,634.91
  6. Step 6: Final answer
    x = 99,262.71

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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.